Answer:
all living organisms have cells fire does not
Spring tides happen 2 times each month at the _and_phases
Neap tides happen 2 times each month at the _and_phases
Answer:
Spring tides happen 2 times each month at the New and Full phases
Neap tides happen 2 times each month at the First Quarter and Third Quarter phases
Explain what the color change indicated about the changes in the concentrations of Co(H2O)62+ and CoCl42– in each trial.
Trail one
starting color: purple
added 3 drops of Hcl(aq)
end color:blue
Trail two
start color is :blue
added 3 drops of AgNOv3(aq)
and White stuff forms at the bottom.
end color is: light pink
Addition of HCl leads to te formation of blue CoCl4^2– while the addition of AgNO3 leads to the formation of pink Co(H2O)6^2+.
What is equilibrium?Dynamic equilibrium is said to have been attained in a reaction when the rate of forward reaction is equal to the rate of reverse reaction. Now we have the equilibrium as shown in the image attached.
When we add HCl as in trial 1, the equilibrium position is shifted to the left and blue CoCl4^2– is formed. When we add AgNO3, the Cl^- is precipitated out of solution and the equilibrium shifts towards the left to yield pink Co(H2O)6^2+.
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What does Earth rotate on? (2 points)
a
Its axis
b
Its continents
c
Its countries
d
Its poles
help asap i'll give u 100 points and brainliest
Answer:
its axis
Explanation:
the earth rotates on its axis 24 hrs a day in relation to the sun.
Explain the difference between current electricity and magnetism.
Answer:
Electricity can be present in a static charge, while magnetism's presence is only felt when there are moving charges as a result of electricity. In simple words, electricity can exist without magnetism, but magnetism cannot exist without electricity.
HOPE THIS HELPS, HAVE A GREAT DAY!!~
Explanation:
c) Which one of the following compounds will react with perrhenic acid? Tick one box.
ethane
hydrochloric acid
potassium carbonate
sodium chloride
Answer:
I believe is the correct answer
Explanation:
hydrochloric
what do all fossils fuels have in common
[tex] \mathrm\pink{Almost \: all \: fossils \: are \: in \: sedimentary \: rocks.} [/tex]
Which state of matter of water is the most dense ?
A. Gaseous water vapor
B. Liquid water
C. Solid ice
D. Water and ice are equally dense.
Which of the following is an example of an insoluble substance being added to water?
When added to water, the substance quickly falls to the bottom and then dissolves.
The substance has disappeared after being poured into the water.
The substance makes the water cloudy and then forms a layer on top of the water.
The water remains clear after the substance is stirred into the water with a spoon.
Answer:
Explanation: “Insoluble” generally means that a substance does not dissolve in water. Some examples include: sand, fats, wood, metals, and plastic. When we put them in water and try to mix them, they will not dissolve.
Explanation:
A mutation can be defined as a change in an organism's
transcription.
phenotype.
genotype.
proteins.
Answer:
Genotype
Explanation:
A mutation is the change is DNA, aka the genotype
How many joules are required to eat 5.25 g of titanium from 85.5 celsius to 132.5 celsius
The amount of energy required to eat 5.25 g of Titanium from 85.5 celsius to 132.5 celsius is 129 joules.
How do we calculate required heat?Absorbed or released amount of heat will be calculated by using the below formula as:
Q = mcΔT, where
m = mass of titanium = 5.25g
c = specific heat of titanium = 0.523 J/gram degree celsius
ΔT = change in temperature = 132.5 - 85.5 = 47 degree celsius
On putting these values on the above equation we get,
Q = (5.25)(0.523)(47) = 129 joules
Hence required heat is 129 joules.
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2H2O --> 2H2 + O2 If you begin with 20 grams of H2O, how many moles of O2 are produced?
Answer:
17.78 gm
Explanation:
2 H20 mole weight = 36 gm
which leads to 32 gm O2
36 / 32 = 20 / x x = 17.78 gm
what is the concentration of OH− in a solution with a pOH value of 6.09
Answer:
I'm not sure
Explanation:
I'm just not sure
Contrast (Compare) the Sun's gravitational pull on Earth when Earth is
closest to the Sun and when Earth is farthest from the sun.
Answer:
gravity equation.
Explanation:
use this gravity equation
F= G(m1*m2/d²)
How to find moles of a cooking recipe? Chemistry project help please
The moles of substances required to make scrambled eggs is given in the cooking recipe for scrambled eggs.
What is the moles of a substance?A mole of. a substance is the amount of that substance which contains the avogadro number (6.02 × 10^23) of particles in it.
A mole of a substance is usually given as a standard unit measurement of that substance.
The mass of 1 mole of is known as the molar mass if that substance.
From the recipe for preparing scramble eggs given, the moles of substances required are as follows:
6 moles of eggs1 mole of red bell pepper1 mole of green bell pepper1/2 moles of carrots1/4 moles of olive oil 1/4 cup of saltTherefore, the moles of substances required to make scrambled eggs is given in the cooking recipe for scrambled eggs.
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#SPJ1
Helpppppppppppppppppp
Answer:
Ch4-Methane ( 5 atoms )
CO2- Carbon Dioxide ( 3 atoms )
H2O- Water ( 3 atoms )
2O2- Oxygen ( 2 atoms )
Is god real I don’t really no but say yes
Answer:
Yes
Explanation:
We have been created by him therefore we would not have been created if there was no God.
Which of the following describes carbohydrates?
Answer:
They are converted into glucose, they are a source of energy for the body
Explanation:
that's the answer
Complete:
If two or more elements or chemical compounds come into contact with one another and there is enough ________________present, a chemical change may take place.
a. When a substance undergoes a chemical change, the chemical ______________of the substance is altered.
b. A chemical change can also be called a chemical _______________.
sodium oxide can react with water to produce sodium hydroxide. in the reaction, how many moles of sodium hydroxide will be produced.
Answer: 2 mol of NaOH
Explanation:
The balanced chemical equation for the reaction is:
Na2O + H2O --> 2NaOH
Looking at this, we can see that 1 mol of Na2O will react with 1 mol of H2O to produce 2 mol of NaOH
Pots A and B both have plain soil, bean seeds, and the same amount of light. Pot B receives more water (see table). After 50 days the plants are measured. Based on the data, which of the following conclusions can NOT be drawn from the data table?
A plant that receives more water will have more mass
The amount of water a plant receives affects its growth
The taller a plant is, the more mass it has
A plant that receives more water will grow t
A. water per day: 20 m/ height: 24cm/ mass: 3.1g B. Water per day: 60 ml/ height: 24cm/ mass: 9.6g
I think that the answer to this question is the third option. These two plants are of the same height but plant B has more mass. So therefore the statement is not true.
If this is a multiple-choice, then I would also select the fourth option along with the third. Plant B received more water, but it is the same height as plant A.
I hope my answer is satisfactory, and that I was of help to you.
-Toremi
What are the steps of natural selection?
Answer:
The five steps involved in the process of natural selection are
Variation • Inheritance • Selection • Time • Adaptation
☆anvipatel77☆
•Expert•
Brainly Community Contributor
Write balanced chemical equations for:
a) coke + oxygen --> carbon dioxide
b) carbon dioxide + coke --> carbon monoxide
Answer:
a. C (s)+ 02(g)---->C02(g)
b. CO2(g) +C(s)--->2CO(g)
Explanation:
This reaction is the method of purification of some precious metals such a iron(Fe) in it's ore. a.The carbon(coke) is oxidized to carbon (IV) oxide
b. the carbon dioxide gas is reduced with the same carbon to produce carbon(II) oxide.
Adjust the alkalinity from 70 ppm to 100 ppm in a 250. 000 gallon pool using sodium bicarbonate
For an adjustment of the alkalinity from 70 ppm to 100 ppm in a 250,000 gallon pool using sodium bicarbonate, the amount of added chemical is mathematically given as
X=105lbs
What is the amount of added chemical?Generally, the equation for the Chemical added is mathematically given as
X=requred usage*desired change/10ppm*pool of gallon/10000
Therefore
X=1.4*(100-70/10)*(250000/10000
X=105lbs
In conclusion, the added chemical
X=105lbs
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Which of the compounds below will dissociate in water? Check all that apply.
Ba(NO3)2
CaSO4
CO2
H2CO3
Mg3(PO4)2
The compounds that can dissociate in water from the options given below are;
Ba(NO3)2
CaSO4
Mg3(PO4)2
What is dissociation of compounds?Dissociation of compound is the process by which compounds degraded into smaller unit which can also recombine to form larger one in another condition.
When ionic compounds dissociate in water, the water molecules separate the ionic crystal. This is because of the attraction between the positive and negative ions in the crystal.
Therefore, The following compounds dissociate in water.
Ba(NO3)2
CaSO4
Mg3(PO4)2
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Solve
A gas occupies 9 L at a temperature of 325K. What is the volume at 450?
O 125L
ОЗК
O 302
O 87 L
The volume of a gas that occupies 9 L at a temperature of 325K is 12.46L.
How to calculate volume?The volume of a given gas can be calculated using the following Charle's law equation:
V1/T1 = V2/T2
Where;
T1 = initial temperatureT2 = final temperatureV1 = initial volumeV2 = final volumeV1 = 9LV2 = ?T1 = 325KT2 = 450K9/325 = V2/450
325V2 = 4050
V2 = 4050/325
V2 = 12.46L
Therefore, the volume of a gas that occupies 9 L at a temperature of 325K is 12.46L.
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Why are water and hydrogen peroxide different substances even though they are both made up of hydrogen and oxygen atoms?
What are 3 types of insects that belong to Phylum ?
Answer:
3 examples are beetles, a fly, and bees. Others include ants lady bugs and butterflies
Explanation:
3. Classify each reaction as exothermic or endothermic. (4 marks)
a. Energy + SO2(g) S(g) + O2(g) _________________________________
b. Draw a potential energy diagram for the reaction above:
Energy + SO2(g) -----> S(g) + O2(g) is an edothermic reaction owing to te fact that energy is a reactant in the equation.
What is an endothermic reaction?An endothermic reaction is one in wioch energy is supplied to the system in order to enable the breakdown of bonds. Hence, the reaction vessel feels cool as energy is withdrawn from the surroundings.
The reaction; Energy + SO2(g) -----> S(g) + O2(g) is an edothermic reaction since energy is a reactant in the equation.
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Calculate the molarity of a solution prepared by diluting 7.0 mL of 4.0 M solution to a volume of 30 mL.
Considering the definition of dilution, the molarity of a solution prepared by diluting 7.0 mL of 4.0 M solution to a volume of 30 mL is 0.93 mL.
What is diluionFirst of all, you have to know that when it is desired to prepare a less concentrated solution from a more concentrated one, it is called dilution.
Dilution is the process of reducing the concentration of solute in solution, which is accomplished by simply adding more solvent to the solution at the same amount of solute.
In a dilution the amount of solute does not change, but as more solvent is added, the concentration of the solute decreases, as the volume (and weight) of the solution increases.
A dilution is mathematically expressed as:
Ci×Vi = Cf×Vf
where
Ci: initial concentrationVi: initial volumeCf: final concentrationVf: final volumeMolarity of the solution in this caseIn this case, you know:
Ci= 4 M Vi= 7 mLCf= ?Vf= 30 mLReplacing in the definition of dilution:
4 M× 7 mL= Cf× 30 mL
Solving:
(4 M× 7 mL)÷ 30 mL= Cf
Cf= 0.93 mL
In summary, the molarity of a solution prepared by diluting 7.0 mL of 4.0 M solution to a volume of 30 mL is 0.93 mL.
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How did Mesosaurus fossils get separated?
First, state your claim about how the Mesosaurus fossils got separated. Then, use evidence to support your claim. For each piece of evidence you use, explain how the evidence supports your claim. I need 2 reasoning and two pieces of evidence. help l will give you 15 points if they answer this now!
Answer: try thinking with your eyes close
Explanation: