Answer:
C. Hardness
Explanation:
A P E X
What is the molecular formula of a compound with an empirical formula of CH and a molecular mass of 78 amu?
Answer:
Answer is 1
Explanation:
What are water and carbon dioxide converted into by the end of
photosynthesis? *
air and sunlight
water and air
sugar and water
sugar and oxygen
Answer:In photosynthesis, solar energy is harvested as chemical energy in a process that converts water and carbon dioxide to glucose. ... In cellular respiration, oxygen is used to break down glucose, releasing chemical energy and heat in the process. Carbon dioxide and water are products of this reaction.
Explanation:
PLS ANSWER THIS FOR ME ILL GIVE BRAINLIEST
ok so pls watch episode 18 (Eureka Videos is the channel) and then answer all these
When molecules evaporate they are gaining enough _______ to break the forces of __________ holding them together. This might be compared to the popping of popcorn.
Why can't we see the vapour molecules that have escaped?.
How does increasing the heat affect the rate of molecules popping out into the vapour state?
The colder molecules get, the _________ they move
The outpost structure of the bacteria cell is the.
Un camion que circula a 90 km hora frena uniformemente con una aceleracion de -5 metros por segundos al cuadrado
Answer:
no habla espanol
Explanation:
What do you call a rock that cooled rapidly outside a
volcano?
Explanation:
intrusive rocks.....
.
Which pair could be genetic clones?
look at the photo
Answer:
cow female
Explanation:
What colour change would you notice with China rose indicator when you add it to soap water and vinegar?
The intensity of a sound wave increases as the wave spreads out from the source of the sound
Answer:
The more spread out their energy becomes
How are you able to light a bunsen burner
Answer:
Lighting Bunsen Burner:
Explanation:
Close needle valve and collar. Open gas valve fully. Open needle valve 1/2 turn. Use the spark/lighter to light the flame.
I'm having trouble balancing these. Can you help me
Answer:
Oh Okay
I hope u have a better rest of ur day
what are the elements in the first period
Answer:
Explanation:
There are only two elements in the first period: hydrogen and helium. We can explain why there is less elements in the first row in modern theories of atomic structure.
Answer:
"Hydrogen and Helium". Hydrogen and Helium are the elements of the first period in the modern periodic table.
Explanation:
what does solubility mean?
Solubility means the ability of a solute to dissolve in solvent to form a solution.
What is solubility?Solubility is defined as the maximum amount of a substance that will dissolve in a given amount of solvent at a particular temperature.
The solute can be a solid, liquid or a gas.
The solubility of a solid or a liquid solute in a solvent is affected by the temperature, while the solubility of a gaseous solute is affected by both the temperature and the pressure of the gas.
Therefore, Solubility means the ability of a solute to dissolve in solvent to form a solution.
Learn more about Solubility, here:
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What is the molarity of a solution in which 35 mole of AgNO3 is dissolved in 5 L of solution?
Answer:
23
Explanation:
Answer:
0.118m
Explanation:
9. Which of the following is a chemical property of water at 4°C? its temperature its state its color
Use the following equation to answer the questions below.
CH4 (g) + 2O2 (g) → CO2 (g) + 2H2O (g)
1. What type of reaction is this? Why do you say it is this type of reaction? Support your claim with evidence. (2 points, 1 point valid type of reaction, 1 point valid evidence)
2. What is the mole ratio of methane to water in the reaction? (1 point correct mole ratio)
3. How many moles of water are produced from the reaction of 50.0g of methane (CH4)? Show your work (2 points, 1 point valid answer, 1 point valid work)
Answer:
1-Double replacement
Explanation:
Multiple Choice: Encircle the letter of the correct answer.
1. Which type of matter has the molecules packed closer together?
a. Solid
b. Liquid
c. Gas
d. Plasma
2. Matter is made up of __________.
a. Molecules
b. Particles
c. Atom
d. All of them
3. Particles with more energy move ________ than particles with less
energy.
a. Slower and closer together
b. Slower and farther apart
c. Faster and farther apart
d. Faster and closer together
4. Which best describes the particles in a liquid?
a. More freely moving than a gas
b. More freely moving than a
solid
c. Less freely moving than a
solid
d. Completely unmoving
5. Which of the following statements describes a mass?
a. The force of attraction between two bodies.
b. The force of gravity exerts on a body of mass.
c. The amount of matter in an object.
d. The weight of the object from place to place.
6. Any sample of matter has mass and takes up space. The main reason
for this is because __________.
a. All matter is heavy
b. Matter can be a gas
c. Matter is made up of tiny particles that have mass and take up space
d. The Earth is made of matter
7. When a thermometer is heated, the red liquid inside the thermometer
moves up. This is mainly because __________.
a. The red liquid is thin.
b. The molecules of the liquid move faster and get a little further apart
c. Hot liquid is lighter
d. The glass of the thermometer gets hot
For question numbers 8-10,
8. To describe a liquid, you could say:
a. The particles of a liquid are not attracted to one another
b. The particles of a liquid are in motion
c. The particles of a liquid are not able to move past one another
d. A liquid has no mass but takes up space
9. To describe a solid, you could say:
a. The particles of a solid are not attracted to each other
b. The particles of a solid can move past one another
c. The particles of a solid vibrate but do not move past one another
d. A solid has mass but does not take up space
10. To describe a gas, you could say:
a. The particles are very attracted to each other
b. The particles are not very attracted to each other
c. The particles are close together like a liquid
d. The particles of a gas are closer apart than the particles in a liquid or
solid
Answer:
1. solid
2. all of them
3. Faster and farther apart
4. more freely moving than a solid
5. the amount of matter in an object
6. matter can be a gas.
7. the glass of the thermometer gets hot.
8. the particles of a liquid are unable to move past each other.
9. the particles of a solid vibrate but do not move past one another.
10. the particles are not attracted to one another.
Name the following compound: KI
Explanation:
--KI:Potassium iodide
what is a flame,metion two types of flames
Answer:
A flame is defined as the gaseous part of the fire which is visible to us. A flame is created due to the high exothermic reaction.
Two types of flames based on the amount of oxygen available are:
Non-luminous or blue flame: In this type of flame the amount of oxygen is sufficiently large and it gives blue flame. For example: flame of Gas stove. Luminous flame: In this type of flame, the oxygen availability id not sufficient for the complete combustion and left unburnt carbon particles that forms yellow light flame. For example: kerosene lamp.Where are fusion reactions found
Answer:
In a nuclear fusion reaction, the nuclei of two atoms combine to create a new atom. Most commonly, in the core of a star, two hydrogen atoms fuse to become a helium atom. Although nuclear fusion reactions require a lot of energy to get started, once they are going they produce enormous amounts of energy.
Explanation:
Given the following equation: 2C6H6 + 15O2 - 12CO2 + 6H2O
How many moles of O2 are needed to react with 4.0 moles of
C6H6?
A. 30 Moles
B. 12 moles
C. 4.0 moles
D. 24 moles
Answer: 30 moles
Explanation:
2C6H6 + 1502 -------> 12CO2 + 6H2O from reaction
2 mol 15 molgiven 4.0 mol
x molx = 4.0*15/2 = 30. mol
3. Among the pairs of organic compounds below. Which is
a. water, lubricating oil b. kerosene, liquefied perde
Answer:
A is the right answerA is the right answerA is the right answerA is the right answer
Explanation:
what mixture is salt and water?
a.solutions
b.colloids
c.suspensions
Are monomers saturated?
Answer:
vwi AC wjkw Jew hill to a friend about our services to our terms of this website are not responsible for all your hard disk space and the rest is just the same time the page you are not logged into the air and the other
An average, how many eggs does a female release each
cycle?
Answer:
At birth, there are approximately 1 million eggs; and by the time of puberty, only about 300,000 remain. Of these, only 300 to 400 will be ovulated during a woman's reproductive lifetime. Fertility can drop as a woman ages due to decreasing number and quality of the remaining eggs.
Explanation:
Hope This Helps!!
Answer:
One egg per month usually .
Explanation:
This is the single egg that makes it through the whole ovulatory process
Which of the following best describes the kinetic theory?
A. Energy is conserved when converted to another type of energy.
B. Atoms and molecules are always moving or vibrating.
C. Electron pairs move apart to form more stable molecules.
D. Atoms rearrange in molecules to form new compounds.
Answer:B
Explanation:
Atoms and molecules are always moving or vibrating. (just took the test)
Answer:
★ B. Atoms and molecules are always moving or vibrating.
Explanation:
Hope you have a great day :)
Which is an inequality?
A. 1 <4
C. 2 = 1 + 1
O D. 3
Explanation:
step 1. an inequality has either a <, <=, >=, or a >.
step 2. 1 < 4 is an inequality.
step 3. the answer is A.
What volume of chlorine gas (Cl2), measured at STP, can be produced by the decomposition of 73.0g of hydrogen chloride gas (HCl), according to the balanced equation? (the other product is hydrogen gas (H2))
Answer:
Explanation:
2HCl = H₂ + Cl₂
2 mole 1 mole 1 mole
73 gram HCl = 73 / 36.5 = 2 mole of HCl
2 moles of HCl will produce 1 mole of chlorine gas .
At STP , one mole of chlorine gas has volume equal to 22.4 litre .
a rigid metal container has a volume of 20.0 L with nitrogen gas to a pressure of 197atm at 28.0 C. How many moles of gas are present in the container
Answer:
i wish i knew sorry
Explanation:
Aluminium can be manufactured from the electrolysis of a molten mixture of aluminium oxide and
cryolite. In this process, which electrode must be continually replaced
Answer:
The carbon anode
Explanation:
The carbon anode is continually replaced because it burns off as carbon IV oxide gas by reacting with the oxygen had produced at the anode.