All categories

3 years ago

The mass of .10 moles of iron is:

Chemistry

2 answers:

Stels [109]3 years ago

8 0

Answer:

so mass in gram=560grams

Explanation:

number of moles=10moles

molar mass=56grams/moles

mass in gram of Fe=?

as we know that

$number of moles=\frac{mass in gram}{molar mass}$

evaluating the formula

number of moles×molar mass=mass in gram

mass in gram=10moles×56grams/moles

mass in gram=560grams

i hope this will help you :)

Elenna [48]3 years ago

5 0

The answer is going to be 560grams, i hope this helps and have a good day

You might be interested in

The U.S. quarter has a mass of 5.67 g and is approximately 1.55 mm thick.

Whitepunk [10]

So 575 ft=175260mm so all you have to do is divide
175260/1.55=113070.967742

3 0

3 years ago

How many atoms of lead are contained in 0.532mol?

Colt1911 [192]

Answer:

3.2043 x 10²³

Explanation:

No. of Mole of lead (Pb) = 0.532 mol

No. of atoms of lead = ?

Solution:

Formula Used to calculate

no. of moles = numbers of particles (ions, molecules, atoms) /Avogadro's number

Avogadro's no. = 6.023 x10²³

So,

The formula could be written as

no. of atoms of lead Pb = no. of moles x 6.023 x10²³

Put the values in above formula

no. of atoms of lead Pb = 0.532 mol x 6.023 x10²³

no. of atoms of lead Pb = 3.2043 x 10²³

so 3.2043 x 10²³ atoms of lead are contained in 0.532 mole.

6 0

2 years ago

Bromine, a liquid at room temperature, has a boiling point of 58°C and a melting point of –7.2°C. Bromine can be classified as a

andreev551 [17]

Answer:

Pure substance.

Explanation:

7 0

2 years ago

What is the different between a graph representing data that is directly proportional and a graph that is inversely proportional

sesenic [268]

A graph depicting a direct relation is a straight line and usually has positive slope. An inverse relation is a curve, typically concave up with negative slope.

7 0

3 years ago

If the half-life of Carbon-14 is 5700 years, how many years would it take a sample to decay from 1 gram to 31.3 mg

andrew-mc [135]

Answer:

28500 years

Explanation:

Applying,

A = A'( $2^{x/y}$ )............... Equation 1

Where A = Original mass of Carbon-14, A' = Final mass of carbon-14 after decaying, x = total time, y = half-life.

From the question,

Given: A = 1 g, A' = 31.3 mg = 0.0313 g, y = 5700 years.

Substitute these values into equation 1

1 = 0.0313( $2^{x/5700}$ )

$2^{x/5700}$ = 1/0.0313

$2^{x/5700}$ = 31.95

$2^{x/5700}$ ≈ 32

$2^{x/5700}$ ≈ 2⁵

Equating the base and solve for x

x/5700 ≈ 5

x ≈ 5×5700

x ≈ 28500 years

3 0

2 years ago