All categories

2 years ago

Element

Chemistry

1 answer:

salantis [7]2 years ago

7 0

Answer:

Explanation:

This is not the exact definition of a formula unit, but I think I know what is meant. You want the number of mols that 33.8 grams represents.

1 mol of SrF2

1 unit of Sr = 87.62

2 units of F = 19.00 * 2<u> = 38.00</u>

1 mol of SrF2 = 125.62

mols SrF2 = given mass / molar mass

given mass = 33.8

Molar mass = 125.62

mols = 33.8/125.62 = 0.269

You might be interested in

What process describes how plants use air, water, and energy from the Sun to make their own food? A) water.

CaHeK987 [17]

D) the products of photosynthesis.

8 0

4 years ago

Read 2 more answers

SI unit for measuring distance is

MrMuchimi

The SI unit for measuring distance is the meter.
I attached a table of SI measurements for you :)
Hope this helped!

6 0

3 years ago

Cl2 + H2 + 2HCI

Cloud [144]

Answer:

1 and 2

Explanation:

The given equation is:

Cl₂ + H₂ → 2HCl

A coefficient is the variable or number before a chemical specie.

In this reaction Cl₂ and H₂ are the reactants;

The coefficient of Cl₂ is 1,

H₂ is 1,

HCl is 2

The subscript is the number to the lower power after a chemical specie is denoted.

For Cl₂, it is 2

6 0

3 years ago

How many silver atoms are there in 3.78g of silver?

oksian1 [2.3K]

2.1 x 10²²atoms

Explanation:

Given parameters:

Mass of silver = 3.78g

Unknown:

Number of atoms of silver = ?

Solution:

To solve this problem, we first find the number of moles of the silver from the given mass.

Number of moles = $\frac{Mass}{Molar mass}$

Molar mass of Ag = 108g/mole

Number of moles = $\frac{3.78}{108}$ = 0.035mole

Now;

A mole of any substance contains 6.02 x 10²³ atoms

0.035 moles of Ag will contain 0.035 x 6.02 x 10²³ = 2.1 x 10²²atoms

learn more:

Number of moles brainly.com/question/13064292

#learnwithBrainly

8 0

3 years ago

In compounds,has an oxidation number 1-

alex41 [277]

Fluorine in compounds is always assigned an oxidation number of -1

5 0

4 years ago