There are 1.65 × 10^(-7) g S in 3.01 × 10^15 atoms S.
<em>Step 1</em>. Use Avogadro’s number to convert <em>atoms of S to moles of S</em>
Moles of S = 3.01 × 10^15 atoms S × (1 mol S/6.022 × 10^23 atoms S)
= 5.148 × 10^(-9) mol S
<em>Step 2</em>. Use the molar mass of S to convert <em>moles of S to grams of S
</em>
Mass of S = 5.148 × 10^(-9) mol S × (32.06 g S/1 mol S) = 1.65 × 10^(-7) g S
Answer:
7923.6 g of (NH₄)₂SO₄ can be produced by this reaction
Explanation:
The reaction is:
2NH₃ (aq) + H₂SO₄(aq) → (NH₄)₂SO₄(aq)
In this reaction ratio is 1:1.
As the ammonia is in excess, the limiting reagent is the sulfuric acid.
So 1 mol of sulfuric can produce 1 mol of sulfate
Then, 60 moles of sulfuric must produce 60 moles of sulfate.
We convert the moles to mass:
60 mol . 132.06 g / 1mol = 7923.6 g
Answer:
0.4762 J/g°C.
Explanation:
<em>The amount of heat released to water = Q = m.c.ΔT.</em>
where, m is the mass of water (m = 15.0 g).
c is the specific heat capacity of water = ??? J/g°C.
ΔT is the temperature difference = (final T - initial T = 37.0°C - 30.0°C = 7.0°C).
<em>∴ The specific heat capacity of water = c = Q/m.ΔT</em> = (50.0 J)/(15.0 g)(7.0°C) = <em>0.4762 J/g°C.</em>
Answer:
The density of gas is 0.2 Kg / L.
Explanation:
Density:
Density is equal to the mass of substance divided by its volume.
Units:
SI unit of density is Kg/m3.
Other units are given below,
g/cm3, g/mL , kg/L
Formula:
D=m/v
D= density
m=mass
V=volume
Symbol:
The symbol used for density is called rho. It is represented by ρ. However letter D can also be used to represent the density.
Given data:
mass = 0,6 Kg
volume= 3 L
density = ?
Now we will put the values in the formula,
d= m/v
d = 0.6 Kg / 3L
d = 0.2 Kg / L
The density of gas is 0.2 Kg / L.
4 I think
Hope that helped