20 points to whoever can answer these 3 questions correctly

Answer:

1.true

2.2

3. false

Explanation:

.........

How are you able to light a bunsen burner​

Which is element number 10?

Please Help!!

what is a flame,metion two types of flames​

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))

what are the elements in the first period

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

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

Which pair could be genetic clones?

look at the photo

The outpost structure of the bacteria cell is the.

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

An average, how many eggs does a female release each
cycle?

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

9. Which of the following is a chemical property of water at 4°C? its temperature its state its color

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.

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

What colour change would you notice with China rose indicator when you add it to soap water and vinegar?

3. Among the pairs of organic compounds below. Which is
a. water, lubricating oil b. kerosene, liquefied perde​

what does solubility mean?

The intensity of a sound wave increases as the wave spreads out from the source of the sound

Given the reaction:
2KCIO3(s) - 2KCl(s) + 302(g)
What is the total number of moles of KCIO3(s) needed to
produce 6 moles of O2(g)?

what mixture is salt and water?
a.solutions
b.colloids
c.suspensions
​

Name the following compound: KI

Are monomers saturated?

What is the molarity of a solution in which 35 mole of AgNO3 is dissolved in 5 L of solution?

What is the molecular formula of a compound with an empirical formula of CH and a molecular mass of 78 amu?

Where are fusion reactions found

What is the atomic number of an isotope with the following symbol:
20 F

Un camion que circula a 90 km hora frena uniformemente con una aceleracion de -5 metros por segundos al cuadrado

Which is an inequality?
A. 1 <4
C. 2 = 1 + 1
O D. 3

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)