Which of the following microbial growth mediums would be used to sample for fungi bacterial growth in the sterile environment ? a) MacConkey agar b) Trypticase soy agar c) Tryptone glucose extract agar d) Bacteriological agar

Answers

Answer 1

The microbial growth medium that would be used to sample for Fungi bacterial growth in sterile environment is : ( B ) Trypticase soy agar

What is a growth medium ?

A growth medium is a solid or liquid which is designed to support the growth of population such as microorganism through cell proliferation. A growth medium contains nutrients which support the growth of the microorganisms.

A growth medium which will support the growth of both fungi and bacteria growth is a Trypticase soy agar medium.

Hence we can conclude that The microbial growth medium that would be used to sample for Fungi bacterial growth in sterile environment is : Trypticase soy agar

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Related Questions

How many grams of hydrogen will be produced from 4.0 moles of Magnesium?

Answers

Answer:

8 grams

Explanation:

trust

Which compound is an alcohol?

CH3Br

CH4

CH3COCH3

CH3CH2OH

Answers

Answer:

[tex]ch3ch2oh \: is \: alcohol \\ because \: it \: havve \: an \: oh \: grp \: \\ thank \: you[/tex]

How many moles of carbon are present in 1.50mole of aspirin , C_{9}*H_{8} * O_{4}

Answers

Given the molecular formula of aspirin, C₉H₈O₄, in 1.50 moles of aspirin there are 13.5 moles of carbon.

What is a mole?

The mole is the SI base unit for the amount of matter. 1 mole of particles contains a number of Avogadro's particles.

We have 1.50 moles of aspirin, C₉H₈O₄. According to the molecular formula, the molar ratio of C₉H₈O₄ to C is 1:9.

1.50 mol C₉H₈O₄ × (9 mol C/1 mol C₉H₈O₄) = 13.5 mol C

Given the molecular formula of aspirin, C₉H₈O₄, in 1.50 moles of aspirin there are 13.5 moles of carbon.

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1. How many joules of heat are necessary to melt 500 g of ice at its freezing point?

Please show work!

Answers

Answer:

40 kcal

Explanation:

Heat required to melt

1 g

of ice at

0°C

is approximately

80 cal

. This is also called latent heat of fusion of ice.

For

500 g

of ice

Q

=

500

g

×

80

cal

g

=

40000 cal = 40 kcal

How many kJ of heat do you need to raise the temperature of 200 g of Aluminum from 80 °C to 100 °C?

Remember to convert your answer to kJ. Round your answer to two decimal places.

Answers

Answer:

0.01

Explanation:

100 -80=20

200/20=10/1000=0.01kj

how many CO grans are produced from 1.80 mol of sulfur dioxide2

Answers

Answer:

A mol (approximately)represents the number 6.02 X 10^^23. Mols become useful when we learn that, for any element on the periodic table, 6.02 X 10^^23 atoms of that element have a mass equal to the atomic mass in grams. So, on the periodic table carbon has an atomic mass of 12.011. That means: 12.011 grams of carbon is made up of 6.02 X 10^^23 atoms.

The above question is tricky.

If the question considers 1 molecule of SO2 as a particle, then the answer is 1.80 * 6.02 X 10^^23

If the question considers the S as one particle, and the O2 as 2 more particles, then the answer is: 3 * 1.8 * 6.02 X 10^^23.

Explanation:

hope it helps U

Calculate the normal concentration of a solution containing 20.8 g in 400 ml.

Answers

Answer:

52 g/L

Explanation:

First, 400 mL / 1000 = 0.4 L

20.8 g / 0.4 L = 52 g /L

Which property of water makes it effective in protecting firefighters?

Answers

Answer:

water has a high specific heat

Explanation:

this should work as an answer

Suggest some ways in which you might determine whether a particular water solution contains an acid or a base.

Answers

The use of the pH scale and litmus paper are the ways which can determine whether the solution is an acid or base.

How pH scale and litmus paper tell about acidic and basic solution?

The pH scale is the way which determine the acidic or basic nature of a solution. If the pH of a solution is less than 7, it is considered as acidic. If the pH is 7, the solution is neutral and if the pH is greater than 7,the solution is basic.

While on the other hand, litmus paper also tells us about acidic and basic nature of solution. if the litmus paper turns red, it means the solution is acidic whereas if the litmus paper turns blue it means basic.

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Calculate the pH of a solution whose pOH is 11.

Answers

Answer:

3

Explanation:

pH + pOH = 14

pH + 11 = 14

pH = 3

socraticorgquestionshowdoyoucalculatethephofasolutionwhengiventheohconcentration

Anthony F  BRIAN M

1. The molecule of Aspirin C_{9}*H_{8} * O_{4} contains 9C atomsatoms, and 4 Oxygen atomsHow are we using the molecular formula to write a conversion factor and use them in the calculation of the weight of compounds ?

Answers

The mass can be obtained from the molar mass when the number of moles is known.

What is molecular formular?

The molecular formlar is the formula of the compound that shows the number of atoms of each element that is present in the molecule. Asprin is a moecule that has the molecular formula C9H8O4.

To use the molecular formula to determine weight, we have to know the number of moles involved.

Mass = number of moles * molar mass.

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How many moles of HCl are in 57 mL of 0.17 M HCl ?

Answers

[tex]\text{Given that,}\\ \\\text{Volume,}~V= 57 mL = 0.057 L\\\\\text{Molar concentration,}~ S = 0.17 ~mol/L\\\\\text{Number of moles,} ~ n=?\\\\S = \dfrac{n}{V} \\\\\implies n = SV = 0.17\times 0.057 =0.00969 ~mol ~ HCl[/tex]

A 23.6 g sample of NagPO4 (molar mass 163.94 g/mol) is dissolved in enough water to produce
g
750. mL of solution.
Calculate the concentration of Nations in solution.

Answers

Taking into account the definition of molarity,  the concentration of Na₃PO₄ in solution is 0.192[tex]\frac{moles}{lliter}[/tex].

Definition of molarity

Molar concentration or molarity is a measure of the concentration of a solute in a solution and indicates the number of moles of solute that are dissolved in a given volume.

The molarity of a solution is calculated by dividing the moles of solute by the volume of the solution:

[tex]Molarity=\frac{number of moles}{volume}[/tex]

Molarity is expressed in units [tex]\frac{moles}{lliter}[/tex].

Concentration of Na₃PO₄ in solution

Being the molar mass of Na₃PO₄ 163.94 g/mole, that is, the amount of mass that a substance contains in one mole, the amount of moles that contains 23.6 g sample of Na₃PO₄ is calculated as:

[tex]23.6 gramsx\frac{1 mole}{163.94 grams} = 0.144 moles[/tex]

Then you know:

number of moles= 0.144 molesvolume= 750 mL= 0.750 L (being 1000 mL= 1 L)

Replacing in the definition of molarity:

[tex]Molarity=\frac{0.144 moles}{0.750 L}[/tex]

Solving:

Molarity= 0.192[tex]\frac{moles}{lliter}[/tex]

Finally, the concentration of Na₃PO₄ in solution is 0.192[tex]\frac{moles}{lliter}[/tex].

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molarity:

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Chromium reacts with bromine to produce chromium(iii) bromide

Answers

The balanced chemical equation for the reaction between chromium and bromine to produce chromium(III) bromide is:

2 Cr + 3 Br2 → 2 CrBr3

This equation shows that two chromium atoms react with three molecules of bromine to form two molecules of chromium(III) bromide.

What is a redox reaction?

A redox reaction is a type of chemical reaction that involves the transfer of electrons between reactants. The term "redox" comes from the combination of two processes during the reaction: reduction, which involves the gain of electrons by a reactant, and oxidation, which involves the loss of electrons by a reactant.

Why is the above reaction an example of a redox reaction?

The reaction is an example of a redox reaction, where reduction and oxidation occur simultaneously. Chromium is oxidized, while bromine is reduced. The reaction also shows the importance of balancing the number of atoms on both sides of the equation to ensure that the law of conservation of mass is satisfied.

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precipitate the reactants in achemical reaction. II. TRUE or FALSE. Write TRUE if the statement is correct and FALSE if it is not.
21. Sugar is very soluble in a nonpolar liquid like mineral oil.
22. Acetone has a higher vapour pressure than ethanol.
23. In a water molecule, the hydrogen is partially positive, while the oxygen is partially negative.
24. The stability of the DNA structure arises from the H-bonding of base pairs.
25. Components of electronic devices include nonpolar substanceslike transient suppression diodes, metalloids and semimetals.
26. Vapour pressure rises as the strength of IMFA decreases.
27. Boiling point, melting point, viscosity ang surface tension increases as the strength of IMFA decreases.
28. lon-dipole interaction exists between ions and a nonpolar compound. 29. Hydrogen bonding occurs with polar molecules bonded with highly- electronegative atoms.
30. Water is a polar molecule, thus it is miscible with nonpolarmolecule like oil. ​

Answers

Answer:

FalseTrueTrueFalseFalseTrueFalseTrueTrueTrue

Explanation:

Sucrose is a polar carbohydrate. The negative and positive regions on the polar sucrose molecules are attracted by the polar water molecules, causing sucrose to dissolve in water. A polar substance like sucrose cannot be dissolved by a nonpolar substance like mineral oil.Because hydrogen bonding gives ethanol a stronger intermolecular force than acetone, ethanol has a higher boiling point than acetone. Because vapor pressure is proportional to boiling point in an indirect manner, acetone has a higher vapor pressure at 25° than ethanol.The Ostart text, O, end text atom hogs electrons and keeps them away from the Hstart text, H, end text atoms because oxygen is more electronegative (electron-hungry). This results in a partial negative charge on the oxygen end of the water molecule and a partial positive charge on the hydrogen end.The stability of DNA double-helical structures is aided by aromatic stacking and hydrogen bonding between nucleobases, which are two of the most important interactions. Hydrogen bonds are noncovalent interactions that are weak, yet the enormous number of hydrogen bonds between complementary base pairs in a DNA double helix combine to endow the structure with a lot of stability.'Boron, silicon, germanium, arsenic, antimony, and tellurium are metalloids. These elements resemble metals but do not conduct electricity as effectively as metals, making them semiconductors.The strength of a liquid's intermolecular forces determines its vapor pressure. The vapor pressure of a liquid with weak intermolecular interactions is higher. The vapor pressure of a liquid with higher intermolecular interactions is lower than that of a liquid with less intermolecular forces.The stronger the IMFs, the lower the vapor pressure of the substance and the higher the boiling point.When an ion interacts with a non-polar molecule, it causes an ion-induced dipole force. The charge of the ion produces a distortion of the electron cloud in the non-polar molecule, generating a brief partial charge, similar to a dipole-induced dipole force.water is a polar solvent and it will dissolve salts and other polar molecules, but not non-polar molecules like oil.

A person is going for a walk in the evening. To make sure that she can be seen walking when it gets dark, she wears a glow stick around her neck. The glow stick can be used as a light source when she bends the stick. Although the stick is sealed, bending the stick allows two chemicals to come in contact and react with each other. During the chemical reaction, light is given off by the glow stick.

When the reaction stops, light is no longer given off. What happens to the mass of the glow stick after the chemical reaction occurs? Explain citing evidence from the prompt and identify the scientific law that supports your explanation.

(give me claim,evidence,reasoning)

Answers

From the law of conservation of mass, the mass of the glow stick does not change after the reaction.

Law of conservation of mass

From the law of conservation of mass we know that mass can neither be created nor  destroyed but is converted from one form to another. Since the mass of the system must remain unchanged, It then follows that the mass of the glow stick must remian the same.

Therefore, the mass of the glow stick does not change after the reaction following the law of conservation of mass.

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Calculate the (H3O+) for a solution whose pH is 6.79



Note: blank 1 should have three significant figures



The answer is: Blank 1 X 10^Blank 2

Answers

Answer:

Explanation:

alculate the (H3O+) for a solution whose pH is 6.79

Note: blank 1 should have three significant figures

The answer is: Blank 1 X 10^Blank 2

The pH of a solution is the negative logarithm of H₃O⁺ ion concentration.The concentration of H₃O⁺ ions in a solution with a pH of 6.79 is 1.6 × 10⁻⁷M.

What is pH ?

pH of a solution is the measure of its acidity or basicity. Mathematically it is the negative logarithm of its  H₃O⁺ ion concentration. A solution with a pH of 7 is neutral.

The solution with a pH below 7 is acidic and above 7 is basic. Thus, the higher H+ ion concentration, then the pH will be lower and more acidic the solution.

It is given that the pH of the solution is 6.79. The concentration of  H₃O⁺ ions in the solution is calculated is calculated as follows:

pH   = -log ( H₃O⁺)

6.79 = -log( H₃O⁺

[ H₃O⁺] = antilog (-6.79)

             =  1.6 × 10⁻⁷M

Hence, the  hydronium ion H₃O⁺ ion concentration of the solution of pH 6.79 is  1.6 × 10⁻⁷M.

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Unwanted elements are removed from metals by a process called
a. mining
b. fission
c.refining
d. recycling​

Answers

Answer:

C. Refining

Explanation:

Refining process removes elements from a substance

energy contained in the
and
15. The energy transformation in a flashlight is from
battery to
energy in the circuit, to
energy released by the light bulb.

Answers

Answer:

yes of course is true the

What are valence electrons?

A electrons in the outermost level of each atom
B electrons found in the s or p orbitals of atoms
C electrons in the innermost level of each atom
D electrons produced by the radioactive decay of the nucleus of an atom

Answers

A electrons in the outermost level of each atom

how many days it take to a year

Answers

Hey there!


January = 31 ☑️

February = 28 (sometimes 29 on a leap year) ☑️

March = 31 ☑️

April = 30 ☑️

May = 31 ☑️

June = 30 ☑️

July = 31 ☑️

August = 31 ☑️

September = 30 ☑️

October = 31 ☑️

November = 30 ☑️
December = 31 ☑️


Therefore, your answer is: 365

[Below is how to find out and what your answer to this given question]



Good luck on your assignment & enjoy your day!


~Amphitrite1040:)

Help me plssssssssss

Answers

Answer:

The answer for this selection is 4

Explanation:

Assume you added 40.0 mL of Vitamin C stock solution instead of 25.0 mL when preparing Solution. How would this affect the reaction rate?

Answers

The reaction rate is affected if the vitamin C is added in lower quantity due to lower amount of reactants.

What happen when the vitamin C is added in lower amount?

If you added 40.0 mL of Vitamin C stock solution instead of 25.0 mL when preparing Solution, the reaction rate is affected because of the lower amount of reactant for the chemical reaction. If the reactants are present in larger amount then the products are also produced in large concentration.

So we can conclude that the reaction rate is affected if the vitamin C is added in lower quantity due to lower amount of reactants.

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What is radioactive dating in chemistry?
PLEASE HELP!!!

Answers

Radioactive dating uses the concept of half life to determine the age of something.
The general idea is that elements exist naturally as a combination of isotopes. Some isotopes are stable while others decay radioactively. The half-life of a radioactive isotope is the time required to reduce the initial quantity of the isotope by 50% through the process of radioactive decay.
Carbon 14 dating works this way. A tree growing in the past would have an equilibrium mixture of C-12 and C-14 atoms in proportions consistent with living matter today. We know this value.
When that tree dies, it no longer accumulates new carbon atoms from carbon dioxide in the atmosphere (through photosynthesis). At this point, the proportion of C-14 in the organic matter that was the tree decreases due to the decay of C-14 to an isotope of nitrogen.
When we dig up the remnants of the tree today, we can measure the proportion of C-14 to C-12 and see how much it has been reduced. From this we can calculate backwards using the half life of C-14 (5730 years) to estimate how old the remains of the tree are.

How many moles of neon gas are there 25.0 L of gas or 5.0°C with a pressure of 89.9 KPa?

Answers

Volume=25LTemperature=5°CPressure=89.9kPa

Now

[tex]\\ \rm\rightarrowtail PV=nRT[/tex]

[tex]\\ \rm\rightarrowtail n=\dfrac{PV}{RT}[/tex]

[tex]\\ \rm\rightarrowtail n=\dfrac{89.9(25)}{5R}[/tex]

[tex]\\ \rm\rightarrowtail n=89.9(5)/R[/tex]

[tex]\\ \rm\rightarrowtail n=449.5/R mol[/tex]

How many full orbitals are in phosphorus

Answers

Answer:

three half-filled orbitals

Answer:

6p

Explanation:

It can hold a total of 6

14. Calculate the mass in grams of oxygen required to react completly with 0.75 moles of Aluminum.
4Al + 302 → 2Al2O3
a. 32 g of Oxygen
b. 18 g of Oxygen
c. 16 g of Oxygen
d. 9.0 g of Oxygen

Answers

3mols of O_2 react with 4mol of Al3/4=0.75mol O_2 react with 1mol of Al

Moles of O_2:-

0.75(0.75)0.5625mol

Mass of O_2:-

moles(Molar mass)0.5625(32)18g

Option B

As per the given balanced reaction, 0.75 moles of aluminum metal requires 0.56 moles of oxygen gas for completely reaction. One mole of oxygen gas is 32 g. Then, mass of 0.56 moles is 18 g.

What is aluminum oxide ?

Metals and metal like elements such as aluminum Al are more reactive towards atmospheric oxygen and forms their oxide layers in the metallic surface.

Al₂O₃ is an essential mineral of aluminum formed by the reaction with oxygen as given in the balanced chemical equation. As per this equation, 4 moles of Al requires 3 moles of oxygen for complete reaction.

The number of moles of oxygen required by 0.75 moles of Al is:

(0.75 × 3) /4 = 0.56 moles.

one mole of oxygen weighs 32 g/mol.

mass of 0.56 moles of O₂ = 32 × 0.56 = 18 g.

Therefore, the mass required by 0.75 moles of Al in the reaction is 18 g.

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The weak ionization constant (Ka)
for H2CO3 is equal to:
A
B
(H2CO3]
[H+] [HCO3-)
[H+][HCO3-)
[H2CO3]

Answers

Carbonic acid is a weak acid. Its weak ionization constant (Ka) is equal to:

Ka = [H⁺] [HCO₃⁻] / [H₂CO₃]

What is a weak acid?

A weak acid is an acid that dissociates partially in the water.

The equation for the acid dissociation of carbonic acid is:

H₂CO₃ ⇄ H⁺ + HCO₃⁻

The weak ionization constant (Ka) is the equilibrium constant for this reaction, that is, the product of the concentration of the products divided by the product of the concentrations of the reactants, all of them raised to their stoichiometric coefficients.

Ka = [H⁺] [HCO₃⁻] / [H₂CO₃]

Carbonic acid is a weak acid. Its weak ionization constant (Ka) is equal to:

Ka = [H⁺] [HCO₃⁻] / [H₂CO₃]

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What information does Gibbs free energy give about a reaction?
A. It tells how quickly the reaction will proceed to equilibrium.
B. It tells if the reaction will proceed spontaneously or not.
C. It tells what the most stable forms of the products are.
D. It tells what the activation energy of the forward reaction is.

Answers

Answer: b

Explanation:

If a Hh mom has an offspring with a hh dad, what is the probability that the offspring will have a dominant phenotype?

Question 2 options:

20%


10%


50%


40%

Answers

Answer:

I think 50%

Explanation:

im not really sure

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