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Anna [14]
3 years ago
15

Iron has a density of 7.86 g/cm3. calculate the volume (in dl) of a piece of iron having a mass of 3.72 kg

Chemistry
1 answer:
GaryK [48]3 years ago
8 0
Density is the mass divided by the volume of the object

\rho = \frac{m}{V}

you know denisty and you know mass so you can determine volume if you rearrange the formula

V= \frac{m}{\rho}

however, when you're doing the division, make sure the units match, since density is given in grams and mass  is given in kilograms

once you have volume in cm3, convert that into "dl"
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4 0
3 years ago
You could add aquous hydrochloric to the solution to precipitate out silver chloride. What volume of a 0.130 M aqueous hydrochlo
Mila [183]
1) Chemical reaction: AgNO₃ + HCl → AgCl + HNO₃.
V(AgNO₃) = 30,0 mL = 0,03 L.
c(AgNO₃) = 0,225 mol/L.
n(AgNO₃) = 0,03 L · 0,225 mol/L.
n(AgNO₃) = 0,00675 mol.
From chemical reaction: n(AgNO₃) : n(HCl) = 1 : 1.
0,00675 mol : n(HCl) = 1 : 1.
n(HCl) = 0,00675 mol.
V(HCl) = n(HCl) ÷ c(HCl).
V(HCl) = 0,00675 mol ÷ 0,130 mol/L.
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2) 1) Chemical reaction: AgNO₃ + KCl → AgCl + KNO₃.
V(AgNO₃) = 30,0 mL = 0,03 L.
c(AgNO₃) = 0,225 mol/L.
n(AgNO₃) = 0,03 L · 0,225 mol/L.
n(AgNO₃) = 0,00675 mol.
From chemical reaction: n(AgNO₃) : n(KCl) = 1 : 1.
0,00675 mol : n(KCl) = 1 : 1.
n(KCl) = 0,00675 mol.
m(KCl) = n(KCl) · M(KCl).
m(KCl) = 0,00675 mol · 74,55 g/mol.
m(KCl) = 0,503 g.
n - amount of substance.
M - molar mass.
5 0
3 years ago
Indica, con base en la siguiente ecuación:
Anvisha [2.4K]
Hello I just want to say have a good day
7 0
2 years ago
Each element consists of only one type of atom.<br> A.) True<br> B.) False
natima [27]
False there are different configurations of atoms called isotopes
7 0
2 years ago
Read 2 more answers
What element does “X” represent in Figure 1?
vredina [299]

Answer:

Argon

Explanation:

It's atomic number is 18

hope that's it

6 0
2 years ago
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