2 years ago

How many moles of MgCl2 are there in 338 g of the compound

Chemistry

1 answer:

krok68 [10]2 years ago

3 0

atomic mass of magnesium = 24.305

atomic mass of chlorine = 35.453

molecular mass of MgCl2 = 24.305+2*35.453 = 95.211

Number of moles in 338 g of pure MgCl2

= 338/95.211 = 3.55001 moles

Ans. there are 3.55 moles of MgCl2 in 338 g of the substance.

You might be interested in

A student mixes two clear liquids together. After a few minutes, a white powdery solid can be seen settling on the bottom of the

Dmitry [639]

Answer:

Explanation:

6 0

3 years ago

Cuales son las fórmulas de la velocidad

AnnZ [28]

Answer:

s = d÷ t

Explanation:

Where s means speed, d means distance and t means time

7 0

2 years ago

If after heating the reaction between magnesium and hydrochloric acid, the mass of the magnesium chloride and beaker is measured

Allushta [10]

Since the beaker was heated we can asume that only magnesium cloride is left in the beaker, therfore the difference between the beaker with magnesium chloride and the empty beaker give the mass of magnisium chloride:

$\text{mass MgCl}_2=massbeakerwithMgCl_2-mass\text{ emprty beaker =37.83 g - 33.95g = 3.8}8g$

7 0

11 months ago

WHICH STATE OF MATTER IS THIS: PARTICLES VIBRATE AND CHANGE POSITION

SVETLANKA909090 [29]

Answer: Gas. Gas vibrates and move freely at high speeds.

Explanation:

4 0

3 years ago

Read 2 more answers

ASAP!

Andrei [34K]

Answer:

8.3334%

Explanation:

You have two masses. To find the percent of sodium chloride in water by mass, you divide the mass of NaCl by water. First, make both units the same. Easiest is to convert kg into g. 1.5kg = 1500g

125g NaCl/1500g H2O = 0.0833333333 ==> 8.3334%

5 0

2 years ago