Answer:
applied force .....I'm pretty sure
Answer:
A. Applied forces aka Contact forces
Explanation:
Thos force is created when you apply forces to an object as in a push/pull or other physical ways.
I hope it helps! Have a great day!
Anygays-
Suppose that an individual's arm is cut, and because of this injury, bacteria are able to gain entry to the body and cause disease. What type of defense has been breached (overcome)?
adaptive defense
physical defense
chemical defense
Answer:
Physical :)
Explanation:
Skin works as a shield to the outside elements and does a good job of keeping the bad stuff out. :)
Have an amazing day!!
Please rate and mark brainliest!!
A scientist is studying fish. She wants to sort many different kinds of fish into groups by the way they swim. Which characteristic would the scientist most likely use when grouping the fish? A. number of teeth B. fin position C. number of stripes D. body color
Answer:
B.fin position
C.colour of stripes
What is the name of an isotope with 23 protons and 25 neutrons?
Select one:
Cadmium
Vanadium
Chromium
Manganese
Answer: Vanadium
Explanation:
A 4M solution means there are
______ moles of ______
per one _____ of _____.
There are _____ ml within _____ Liter.
Q. How many moles of HCL are within 2,000ml of a 0.4M solution of HCL?
Q. How many grams of KCl are within 2L of a 0.4M KCL solution?
Answer:
Molarity=number of moles÷volume(L)
In the Lewis symbol for a fluorine atom, there are __________ paired and __________ unpaired electrons.
In the Lewis symbol for a fluorine atom, there are 4 paired and 1 unpaired electrons.
However, paired electrons simply means are 2 electrons occupying the same orbital in an atom or molecule of a substance
On the other end, unpaired electron is a single electron that occupies an orbital of an atom.
What is an atom?An atom is the smallest part of an element which can take part in a chemical reaction.
Some atoms of elements are:
MonoatomicDiatomicTriatomicPolyatomicIn conclusion, in the Lewis symbol for a fluorine atom, there are 4 paired and 1 unpaired electrons.
Learn more about paired and unpaired electrons:
https://brainly.com/question/7457518
Answer: 6, 1
Explanation:
Metallic minerals are consumed in _______ amounts than nonmetallic minerals and materials. group of answer choices
How many grams of rock salt, Naci, do you need to add to a 3.78 kg of ice, to get the temperature to drop to -190?
1129.9 grams of rock salt, NaCl should be added to a 3.78 kg of ice to get the temperature to drop to -19 °C.
What mass of rock salt is required?The mass of rock salt required to lower the temperature of ice by 19 °C is determined using the Blagden's Law given below:
[tex]ΔT = iK_fm[/tex]where;
ΔT = Change in temperature in °Ci = van't Hoff factorKf = molal freezing point depression constantm = molality of the solute in mol solute/kg solvent.The van't hoff factor for NaCl, i = 2
Kf for water/ice = 1.86 °C kg/mol
molalityof NaCl = (mass/molar massl) / kg of ice
The mass of NaCl is derived as follows:
mass of NaCl = molality × mass of ice × molar massmolar mass of NaCl = 58.5
mass of ice = 3.78 kg
Let molality of NaCl = X
ΔT = 19 °C
Inputting the values above in the equation of Blagden law:
19 = 2 x 1.86 °C kg/mol x X
X = 5.11 mol/kg
Then, the mass of NaCl will be;
mass of NaCl = 5.11 × 3.78 × 58.5
mass of NaCl = 1129.9 g
Therefore, 1129.9 grams of rock salt, NaCl should be added to a 3.78 kg of ice to get the temperature to drop to -19 °C.
Learn more about mass at: https://brainly.com/question/15476873
ATCG combine different patterns to form different ____
Answer:
Chemicals
Explanation:
Your answer would be chemicals because of you have different inputs you would also have a different output depending.
I hope it helps! Have a great day!
Anygays-
Answer:
Chemicals
Explanation:
Different ATCG makes different chemicals.
I hope it helps! Have a great day!
Muffin °-°
NEED IT ASAP!PLEASE HURRY
Answer:
snow, or freezing rain?
Explanation:
because freezing rain can occur then, but snow is more common.
10. How many molecules are contained in 5.6 L of H2 at STP?
Answer:
1 mole of any material contains 6.023×1023 elementary particles. Hence, by ratio and proportion, 5.61mol of diatomic hydrogen gas contains 5.61×6.023×1023 hydrogen molecules =3.3789×1024 H2 molecules.
Explanation:
How many moles of silver oxide (l) are needed to produce 4 moles of silver?
The number of moles of silver oxide (I) needed to produce 4 moles of silver is 2 moles
StoichiometryFrom the question, we are to determine the number of moles of silver oxide (I) needed to produce 4 moles of silver
First, we will write the balaced chemical equation for the decomposition of silver oxide (I)
2Ag₂O(s) → 4Ag(s) + O₂(g)
This means, 2 moles of silver oxide (I) [Ag₂O] decomposes to give 4 moles of silver and 1 mole of oxygen gas.
From the balanced chemical equation, it is easy to deduce the number of moles of silver oxide (I) that would give 4 moles of silver.
Hence, the number of moles of silver oxide (I) needed to produce 4 moles of silver is 2 moles
Learn more on Stoichiometry here: https://brainly.com/question/18834543
Question 10 of 25
How many total electrons can the p orbitals hold?
O A. 2
B. 3
C. 6
D. 10
SUBM
Answer:
[tex]\huge\boxed{\sf C. \ 6}[/tex]
Explanation:
Orbitals:
Wave function that describes the location, electronic cloud and wave-like properties of an electron is called an orbital.Types:
There are 4 types of main orbitals.
s orbital (can accommodate 2 electrons)p orbital (can accommodate 6 electrons)d orbital (can accommodate 10 electrons)f orbital (can accommodate 14 electrons)[tex]\rule[225]{225}{2}[/tex]
Need help with Chem.
What is the molarity of a solution that contains 30. grams of naoh in 500. milliliters of solution?.
Answer:
1.5 mol/L
Explanation:
molarity = moles/litres
NaOH = 23 + 16 + 1 = 40 g/mol
[tex] ? \: mol \: naoh \: = 30 \: g \: naoh \: \times \\ \\ \frac{1 \: mol \: naoh}{40 \: g \: naoh} = 0.75 \: mol \: naoh[/tex]
molarity = 0.75 mol NaOH ÷ 0.5 L = 1.5 mol/L NaOH
How many grams are in 4.80 mol of sodium chloride ( NaCl )?
[tex]w = \text{Number of mols} \times \text{Molar mass}=4.8 \times 58.5=280.8~ g[/tex]
We know,
Molar Mass of Sodium= 23 and,
Molar Mass of Chlorine= 35.45
[tex] \therefore \text{Molar Mass of Sodium chloride= 58.44 }\text{g/mol}[/tex]
So, The Molar Mass in Grams=
[tex]58.44 \frac{\text{g}}{ \cancel\text {mol}} \times 4.80 \: \cancel\text{mol} \\ \\ \text{Mass of NaCl }= 280.51\: \text {gram}[/tex]
Hope This Helps!!Need help with predicting products
Na3PO4
+
ZnSO4
What would be the mass of 9.76 x 1022 formula units of SrCla?
Answer:
25.7 g
Explanation:
I don't know what to put here hahaha, I hope my answer helps you ^^
When one mole of hydrogen, H2, is formed, 131 kJ of energy is absorbed.
Calculate the amount of energy absorbed when 240 dm3 of hydrogen, measured at room temperature and pressure, is formed
the amount of energy absorbed when 240 dm3 of hydrogen, measured at room temperature and pressure, is formed.
solution:According to Avogadro's law 1 mole of any gas occupies 22.4 L (dm3) at room temperature and pressure.
So the amount of energy absorbed:
(kJ)E=131∗240/22.4
=1403.6(kJ)
1403.6 kJ is absorbed when 240 dm3 of hydrogen, measured at room temperature and pressure is formed.
Name the cycloalkane.
CH3
CH3
CH3
trimethyl nonane
Explanation:
Which term describes the molecule shown below?
H H
C=C
H
H
O A. Saturated alkene
O B. Unsaturated alkane
O C. Unsaturated alkene
O D. Saturated alkane
Answer:
The answer is C
Explanation:
unsaturated hydrocarbons have multiple carbon bonds
Unsaturated alkene describes the molecule shown below as the atoms are attached by double bonds.
An atom is defined as the smallest unit of matter which forms an element. Every form of matter whether it is solid,liquid , gas consists of atoms . Each atom has a nucleus which is contains protons and neutrons and shells in which the electrons revolve.
The protons are positively charged particles and neutrons are neutral and hence the nucleus is positively charged. The electrons which revolve around the nucleus are negatively charged particles and hence the atom as a whole is neutral particle and stable due to presence of oppositely charged particles.
Atoms of the same element are similar as they have number of sub- atomic particles which on combination do not change the chemical properties of the substances.
Learn more about atom,here:
https://brainly.com/question/30898688
#SPJ7
what is chemical formula of benzaldehyde?
Answer:
the chemical formula of benzaldehyde is C₇H₆O
According to the kinetic molecular theory, the molecules of an ideal gas is
Answer:
exert no attractive forces on each other, or on the walls of the container
Explanation:
giving brainliest please help!
Why do the protons identify the element and not the electrons or the
neutrons?
How much N2 is required to fill a small room with a volume of 27,000 L to a pressure of 0.82 atm at 25 °C?
For a volume of 27,000 L to a pressure of 0.82 atm at 25 °C, the amount of N2 is required is mathematically given as
n=1.1*10^{-3}mole
What amount of N2 is required to fill a small room with a volume of 27,000 L to a pressure of 0.82 atm at 25 °C?Generally, the equation for the ideal gas is mathematically given as
PV=nRT
Therefore
[tex]n=\frac{PV}{RT}\\\\n=\frac{0.980*2700}{0.0821*298}[/tex]
n=1.1*10^{-3}mole
In conclusion, the amount of N2 is required is
n=1.1*10^{-3}mole
Read more about Molarity
https://brainly.com/question/9149034
Answer the question!
Answer:
i think 50C
Explanation:
It only makes since cause if its 4.43 and u want the volume to be 3.13 it has to me 50C
Use Charles law
[tex]\\ \rm\rightarrowtail V_1T_2=V_2T_1[/tex]
[tex]\\ \rm\rightarrowtail 4.43T_2=(70)(3.13)[/tex]
[tex]\\ \rm\rightarrowtail 4.43T_2=219.1[/tex]
[tex]\\ \rm\rightarrowtail T_2=49.4°C[/tex]
What is the ph of a solution of h2so4 that has [h3o ] = 5.45 × 10–5 m?
The pH of a solution of sulphuric acid that has hydronium ion concentration is 4.26.
How do we calculate pH?pH of any solution is define as the negative logarithm of the concentration of H⁺ ion present in any solution, i.e.
pH = -log[H⁺]
In the question, it is given that:
Concentration of hydronium ion or H⁺ ion = 5.45×10⁻⁵ M
So, pH will be:
pH = -log(5.45×10⁻⁵)
pH = -(-4.26)
pH = 4.26
Hence required pH is 4.26.
To know more about pH, visit the below link:
https://brainly.com/question/172153
6. if a cross country runner travels at a speed of 10 mph and he runs for 2 hours, how many miles will he have run at the end of the 2 hours? calculating distance
Explanation:
distance = speed x time
distance = 10 x 2
distance = 20miles
hope that helps :)
If a cross country runner travels at a speed of 10 mph and he runs for 2 hours, 20miles he will have run at the end of the 2 hours.
What is distance?Distance is a description of how far apart two things or points are, either numerically or occasionally qualitatively. Distance can be used to describe a length in physics or to an estimate based on other factors in common usage.
The phrase is widely used metaphorically to refer to a measurement of the degree of distinction between two similar items since spatial intelligence is a rich source of implicatures in human understanding.
distance = speed x time
distance = 10 x 2
distance = 20miles
Therefore, 20miles is the distance.
To know more about distance, here:
https://brainly.com/question/15256256
#SPJ2
what is ozen. gas? How is it formed?
[tex]\sf\huge\underline\purple{Ozone\: Gas:-}[/tex]
Ozone, O3, an unstable, blue, diamagnetic gas with a characteristic pungent odor, protects the earth and its inhabitants from intense ultraviolet radiation from the sun.[tex]\rightarrow[/tex]Ozone is an allotropic molecular form of oxygen containing three atoms of oxygen (O3). Ozone O3 is generated through the passage of oxygen O2 through a high voltage potential resulting in the attachment and formation of a third oxygen atom.
[tex]\rightarrow[/tex]The molecular formula for ozone (O3) was established by Soret (1863) by taking the ratio of the change in volumes when O3/O2 mixtures were either heated or exposed to turpentine and cinnamon oil.
Formation:-[tex]\rightarrow[/tex]Ozone is formed when heat and sunlight cause chemical reactions between oxides of nitrogen (NOX ) and Volatile Organic Compounds (VOC), which are also known as Hydrocarbons. This reaction can occur both near the ground and high in the atmosphere.
__________________________________
Hope it helps you:)
During winter in cold climates, salt is often used on roads to prevent the buildup of slippery ice. Although salt may make driving safer, it can cause the metallic parts of cars to corrode or rust relatively quickly. In a few sentences, please explain what is occurring.
Answer:
this is because the salt may be acidic and also may have oxygen substituent which can lead to rust
During cold winters, the salt present on the roads reacts with the iron and the dew water and results in the formation of the iron oxide as rust.
What is rust?The rust has been given as the iron oxide compound, that has been formed with the reaction of the water with the iron in the presence of oxygen.
In the winters, there has been the presence of the water in the salt, and the interaction of the salt with the iron to form the iron oxide that is rust.
Learn more about rust, here:
https://brainly.com/question/18376414