3 years ago

How many moles are in 9.8 grams of calcium?

Chemistry

2 answers:

seraphim [82]3 years ago

6 0

Answer: 0.24 moles

Explanation:

kondor19780726 [428]3 years ago

4 0

<span>when the number of moles Ca = mass of Ca / molar mass of Ca.

and we can get the molar mass of Ca, it is = 40 g/mol

and we have already the mass of Ca (given) = 9.8 g

so, by substitution: the moles Ca = 9.8 g / 40 g/mol

= 0.245 moles</span>

You might be interested in

What characteristic do all parts of the electromagnetic spectrum have in common

Elza [17]

All electromagnetic waves are amplitude, a characteristic frequency and wavelength, and the ability to travel through a vacuum at the same speed (the speed of light)

5 0

3 years ago

An electric current can be best conducted by

Licemer1 [7]

Answer:

a metal

Explanation:

metals are good conductors of electricity.

7 0

3 years ago

what volume will it occupied 40 degrees celsius a gas sample was collected when a temperature is 27 degrees celsius and the volu

love history [14]

T_1=27°C
T_2=40°C
V_1=1L
V_2=?

Using Charles law

$\boxed{\sf \dfrac{V_1}{T_1}=\dfrac{V_2}{T_2}}$

$\\ \sf\longmapsto V_1T_2=V_2T_1$

$\\ \sf\longmapsto 1(40)=27V_2$

$\\ \sf\longmapsto V_2=\dfrac{40}{27}$

$\\ \sf\longmapsto V_2=1.48\ell$

7 0

3 years ago

Q1. If a piece of ice absorbs 131 J of heat energy, how much was lost by the surroundings?

Rashid [163]

Answer:

Explanation:

4 0

3 years ago

How many moles are in 175.9 grams of Pb3(PO4)2?

snow_lady [41]

Answer:

0.21674767727138733

Explanation:

Again I don't want to give an explanation right now because I can't exactly do that more than once. it hurts my child brain. And the fact that I just woke up.

8 0

3 years ago