Formula for Hydrocloric Acid.

gaseous methane undergoes complete combustion by reacting with oxygen to form carbon dioxide and water vapor . what is the balan

babunello [35]

CH4(g) + 2 O2(g) ----> CO2(g) + 2 H2O(g)

8 0

3 years ago

Consider the following balanced equation. SiO2(s)+3C(s)→SiC(s)+2CO(g) Complete the following table, showing the appropriate numb

vlada-n [284]

Answer:

mol(SiO₂) mol(C) mol(SiC) mol(CO)

3 9 3 6

1 3 1 2

13 39 13 26

2.5 7.5 2.5 5.0

1.4 4.2 1.4 2.8

Explanation:

From the balanced equation:

SiO₂(s) + 3C(s) → SiC(s) + 2CO(g),

It is clear that 1.0 mole of SiO₂ reacts with 3.0 moles of C to produce 1.0 mole of SiC and 2.0 moles of CO.

We can complete the table of no. of moles of each component:

1. 9.0 moles of C:

We use the triple amount of C, so we multiply the others by 3.0.

So, it will be 3.0 moles of SiO₂ with 9.0 moles of C that produce 3.0 moles of SiC and 6.0 moles of CO.

2. 1.0 mole of SiO₂:

We use the same amount of SiO₂ as in the balnced equation, so the no. of moles of other components will be the same as in the balanced equation.

So, it will be 1.0 moles of SiO₂ with 3.0 moles of C that produce 1.0 moles of SiC and 2.0 moles of CO.

3. 26.0 moles of CO:

We use the amount of CO higher by 13 times than that in the balanced equation, so we multiply the others by 13.0.

So, it will be 13.0 moles of SiO₂ with 39.0 moles of C that produce 13.0 moles of SiC and 26.0 moles of CO.

4. 7.5 moles of C:

We use the amount of C higher by 2.5 times than that in the balanced equation, so we multiply the others by 2.5.

So, it will be 2.5 moles of SiO₂ with 7.5 moles of C that produce 2.5 moles of SiC and 5.0 moles of CO.

5. 1.4 moles of SiO₂:

We use the amount of SiO₂ higher by 1.4 times than that in the balanced equation, so we multiply the others by 1.4.

So, it will be 1.4 moles of SiO₂ with 4.2 moles of C that produce 1.4 moles of SiC and 2.8 moles of CO.

5 0

3 years ago

Breyana and her friend found a piece of metal which they want to

alina1380 [7]

Answer:

The density of beryllium is 1.85 g/cm³. Thus given metal is beryllium.

Explanation:

Given data:

Mass of metal = 37 g

Volume of metal = 20cm³

Which metal is this = ?

Solution:

We will solve this problem by using density formula. After finding density we will check from literature which metal has a density similar to our calculated density.

d = m/v

d = 37 g/ 20cm³

d = 1.85 g/cm³

The density of beryllium is 1.85 g/cm³. Thus given metal is beryllium.

5 0

3 years ago

If 2 objects have the same density they must have the same

atroni [7]

Answer:

Explanation:

Density can be defined as mass divided by volume. But 2 objects made of the same material will have the same density regardless of their volume.

8 0

3 years ago

Krypton gas is 21 times denser than helium gas at the same temperature and pressure. which gas is predicted to effuse faster

Inessa [10]

Helium gas would be the one to effuse faster as compared to krypton. This is because krypton is heavier than helium. Heavier molecules would require more energy to move so they tend to effuse slower than molecules that are lighter which will only require less energy.

7 0

3 years ago