Independent variable

Lily is doing a science experiment with a substance in a sealed jar. At first, the substance's molecules are moving around each

Alex

The molecules will be more separated, and will have least amount of intermolecular force of attraction.

<h3>Explanation:</h3>

The molecules inside the jar of Lilly are moving around each other. This means the state of the matter present inside the jar is liquid. As Lily gives more energy inside the jar , the molecules inside the jar will get more separated as the kinetic energy of the molecules increase and the intermolecular force of attraction decreases as well as the intermolecular separation or distance increase. As the energy is continued to be supplied from outside, there will be a time when this liquid will reaches boiling point and will start to change into gas. After this point the intermolecular force of attraction will be least among molecules and their separation will be maximum.

6 0

4 years ago

Calculate the energy required to produce 7.00 mol Cl2O7 on the basis of the following balanced equation. 2Cl2(g) + 7O2(g) + 130

KatRina [158]

Explanation:

As the given chemical reaction equation is as follows.

$2Cl_{2}(g) + 7O_{2}(g) + 130 kcal \rightarrow 2Cl_{2}O_{7}(g)$

Also, it is given that for 2 moles the energy required is 130 kcal. This means that energy required for 1 mole is calculated as follows.

1 mole = $\frac{130 kcal}{2}$

= 65 kcal

Hence, energy required for 7 moles will be calculated as follows.

Energy required = $7 \times 65 kcal$

= 455 kcal

Thus, we can conclude that energy required to produce 7.00 mol $Cl_{2}O_{7}$ on the basis of given reaction is 455 kcal.

3 0

3 years ago

Determine the formula of chromic acid.

Katyanochek1 [597]

Answer: The formula of chromic acid is $H_2CrO_4$

Explanation:

We are given an ionic compound named as chromic acid. This acid is formed by the combination of hydrogen ion and chromate ion.

An acid is defined as the substance which releases hydrogen ion when dissolved in water.

Hydrogen is the 1st element of periodic table having electronic configuration of $1s^1$ .

This element will loose 1 electron to form $H^{+}$ ion.

Chromate ion is a polyatomic ion having chemical formula of $CrO_4^{2-}$

By criss-cross method, the oxidation state of the ions gets exchanged and they form the subscripts of the other ions. This results in the formation of a neutral compound.

So, the chemical formula for the given compound is $H_2CrO_4$

Thus, the formula of chromic acid is $H_2CrO_4$

8 0

3 years ago

2 What is the gram-formula mass of Ca(OH)2?

Verizon [17]

Answer:

The correct Answer is Number 3 the 74 g per mole ...

7 0

3 years ago

How can the rate of this reaction be increased

SOVA2 [1]

Answer:

If you increase the concentration of a reactant, there will be more of the chemical present. More reactant particles moving together allow more collisions to happen and so the reaction rate is increased. The higher the concentration of reactants, the faster the rate of a reaction will be.

7 0

3 years ago

Independent variable ​

Independent variable