please help if you can. thank you.​

Answer:

Should be Mercury.

Explanation:

The atmospheres of the terrestrial planets range from thin to thick. Mercury has almost no atmosphere.

Answer:

The independent variable is the height of the ball that bounces.

Answer:

1.0 g per cubic centimeter.

Explanation:

Answer:

Chemical energy is the potential energy stored in the arrangement of atoms within molecules. Breaking chemical bonds requires energy, while forming new chemical bonds releases energy. The more energy that's released when a bond forms, the more stable that bond is.

Explanation:

Answer:

I think it's replacement because the B and D just swap places in the end equation

Answer:

that would be replacment

Explanation:

if you look at the formula the B and D are replaced with each other

synthesis is when it looks like A+B--> AB

decompositions looks like AB--> A+B

and oxydation is when the states of atoms are changed so it would include things like +1, -1 etc

Answer:

False.

Explanation:

If the gas is leaving it cannot have higher pressure.

Answer:

B

Explanation:

i think with exothermic reactions heat is released

this is what i looked up

hope this helps i took chem last year and think this is what i learned

Considering the definition of exothermic and endothermic reactions, the correct answer is second option: the reaction is endothermic.

Energy is the ability to do work or to produce heat.

Remembering that chemical reactions involve a reorganization of atoms between substances with breaking or formation of chemical bonds, this formation or breaking of chemical bonds is accompanied by changes in the energy of the system.

Chemical reactions that release heat are called exothermic. That is, an exothermic reaction is one where energy flows out of the system.

So, at room temperature, the heat released by a chemical reaction is enough to cause a rise in temperature.

An endothermic reaction is one that requires heat to take place. In other words, a chemical reaction is endothermic when it absorbs energy from the environment.

In this case, the heat is transferred from the outside to the inside of the system. By absorbing heat, the effect of an endothermic reaction is to lower the temperature.

When ammonium chloride is dissolved in water, the beaker gets cold. That means the system is absorbing heat from the surrounding and the temperature does down.

So, the correct answer is second option: the reaction is endothermic.

Learn more about endothermic and exothermic reactions:

Answer:

B

Explanation:

Condensation happen when water is warmed up in room temperature against a cold surface like water vapor

Answer:

c makes sense

Explanation:

if your just sitting there looking at it melt, thats not helping

Answer:

A

Explanation:

Different sizes of ice cubes will result in different lengths of time in staying solid. A bigger ice cube will stay solid for longer than a smaller one.

Answer:

What is the kinetic energy of a 2kg rabbit hopping at a speed of 1.25 m/s?1,5625J

Answer:

i think it is D.

Explanation:

The answer is D because it’s where a solid turns to a gas without going through a liquid phase if that makes sense

Answer:

It's D. because it has negative charge and same mass as neutrons

c. Potential decreases and kinetic increases.

Explanation:

As the boulder is rolling down the hill, potential energy decreases as kinetic energy increases.

Answer:

no.

Explanation:

you're prolly wondering why cuz this is revenge for your little game you did to me and whoops! i don't know the answer :) !

Answer:

atoms from different elements

Answer:

c.to increase the validity of data

Answer:

i think its D

Explanation:

pls tell me if im wrong

Answer:

1) Gaining

2) More

3) More

4) increases

5) decreases

Explanation:

Nonmetals are found towards the right hand side of the periodic table. They form ions by gaining electrons due to the fact that they have more electrons in their outermost shell, hence they only need a few electrons to complete the octet structure.

As the number of shells increases, the outermost shell becomes more populated and easier to fill with electrons.

The reactivity of nonmetal elements generally increases from left to right across the periodic table but decreases from top to bottom down the group.

Answer:

1) Gaining

2) More

3) fewer

4) increases

5) decreases

Explanation:

Answer:

a

Explanation:

Answer:

Density = (3.33kg or g)/cm³(since you didn't state the unit of the mass)

Explanation:

volume = length × breath × height

let's take it as,

length = 2.0cm

breath = 3.0 cm

height = 2.0 cm

mass = 40 kg or g (since you didn't state the unit of the mass)

volume = ?

volume = length × breath × height

volume = (2 × 3 × 2)cm

volume = 12 cm³

Density = mass /volume

40kg or g/12cm³

Density = (3.33kg or g)/cm³(since you didn't state the unit of the mass)

Answer:

Explanation:

The density of a substance can be found by using the formula

[tex]density = \frac{mass}{volume} \\[/tex]

From the question

mass = 10 g

volume = final volume of water - initial volume of water

volume = 52.1 - 50.7 = 1.4 mL

We have

[tex]density = \frac{10}{1.4} \\ = 7.142857...[/tex]

We have the final answer as

Hope this helps you

Answer:

Electrons are transferred in an iconic bond.

Answer:

chemical

Creatine Phosphate (with oxygen) So all muscle cells contain a high-energy compound called creatine phosphate which is broken down to make more ATP quickly. Creatine phosphate can supply the energy needs of a working muscle at a very high rate, but only for about 8–10 seconds.adenosine triphosphate (ATP)

The source of energy that is used to power the movement of contraction in working muscles is adenosine triphosphate (ATP) – the body's biochemical way to store and transport energy. However, ATP is not stored to a great extent in cells

Answer:

Various compounds made of different forces between molecules

Explanation:

In an experiment, the independent variable is the variable that is changed or manipulated by the experimenter in order to effect a measurable response.

According to this question, a student compares the boiling point of substances having different intermolecular forces. This means that the student uses different substances with different intermolecular forces and measures the boiling point of each, which depends on the intermolecular forced in them. Hence, the independent variable in this experiment is the VARIOUS COMPOUNDS MADE OF DIFFERENT FORCES BETWEEN MOLECULES.

Answer: H2O has 8 electrons, GeBr4 has 32 electrons, and RbHO has 37 electrons.

Hope this helped! :)