3 years ago

How many moles of aluminium are in 3.45 moles of pyrophyllite

Chemistry

1 answer:

Fynjy0 [20]3 years ago

6 0

Answer:

Explanation:

You can see that in each molecule of Al2Si4O10(OH)2 there are 2 atoms of Al

moles Al = 2 x moles Al2Si4O10(OH)2

= 2 x 2.70 mol

= 5.40 moles of Al

You might be interested in

15 POINTS!!!! Please answer 1-8

Effectus [21]

1. combustion
2. succession
3. condensation
4. precipitation
5. pioneer species
6. decomposition
7. evaporation
8. nitrogen fixation

4 0

3 years ago

How would the world be different if people were not aware of radioactive decay

allsm [11]

Answer:

everyone would die

Explanation:

if we did not know about it we would not do anything about it

6 0

3 years ago

Explain how to calculate net force.

Alisiya [41]

Force acting on the body when the body is at rest the net formals is given

6 0

3 years ago

Calculate the enthalpy for this reaction: 2C(s) + H2(g) ---> C2H2(g) ΔH° = ??? kJ Given the following thermochemical equation

nordsb [41]

Answer:

The enthalpy for given reaction is 232 kilo Joules.

Explanation:

$C_2H_2(g) + \frac{5}{2}O_2(g)\rightarrow 2CO_2(g) + H_2O(l), \Delta H^o_{1} = -1,123 kJ$ ...[1]

$C(s) + O_2(g)\rightarrow CO2(g), \Delta H^o_{2} = -340 kJ$ ..[2]

$H_2(g) + \frac{1}{2}O_2(g)\rightarrow H_2O(l) ,\Delta H^o_{3} = -211 kJ$ ..[3]

$2C(s) + H_2(g)\rightarrow C_2H_2(g),\Delta H^o_{4} =?$ ..[4]

2 × [2] + [3] - [1] ( Using Hess's law)

$\Delta H^o_{4}=2\times \Delta H^o_{2}+\Delta H^o_{3} - \Delta H^o_{1}$

$\Delta H^o_{4}=2\times (-340 kJ) + (-211 kJ) - (-1,123 kJ)$

$\Delta H^o_{4}=232 kJ$

The enthalpy for given reaction is 232 kilo Joules.

5 0

3 years ago

We can know what elements make up a star by studying the star's position in the

Amanda [17]

The answer is "night sky"
hope i helped :)

7 0

3 years ago