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3 years ago

An element occurs naturally as a gas. It is also characterized by a very

Chemistry

1 answer:

Delvig [45]3 years ago

8 0

I believe it would be c

Please brainiest

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How many moles of aluminum oxide (Al2O3) are in a sample with a mass of 204. 0 g? 1. 000 2. 000 3. 0.

Aleks [24]

Answer:

1. 000.2

Explanation:

 aluminum oxide made of moles or atoms less then other elements need to decrease

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3 years ago

In compounds,has an oxidation number 1-

alex41 [277]

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

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4 years ago

Given that a 19.00 g milk chocolate bar contains 11.50 g of sugar, calculate the percentage of sugar present in 19.00

Jet001 [13]

Explanation:

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2 years ago

For the following reaction, 5.22 grams of aluminum oxide are mixed with excess sulfuric acid. The reaction yields 12.9 grams of

Mamont248 [21]

Answer:

$m_{Al_2(SO_4)_3}=17.5gAl_2(SO_4)_3$

Explanation:

Hello,

In this case, the undergoing balanced chemical reaction is:

$Al_2O_3(s)+3H_2SO_4(aq)\rightarrow Al_2(SO_4)_3(aq)+3H_2O(l)$

Thus, as 5.22 grams of aluminium oxide reacts, the required yielded amount of aluminium sulfate results:

$m_{Al_2(SO_4)_3}=5.22gAl_2O_3*\frac{1molAl_2O_3}{102gAl_2O_3}*\frac{1molAl_2(SO_4)_3}{1molAl_2O_3}*\frac{342gAl_2(SO_4)_3}{1molAl_2(SO_4)_3} \\\\m_{Al_2(SO_4)_3}=17.5gAl_2(SO_4)_3$

Moreover, the percent yield is:

$Y=\frac{12.9g}{17.5g} *100\%=73.7\%$

Best regards.

6 0

4 years ago

a 10g cookie is burned in a calorimeter causing the temperature of 20 g water to change from 3°C to 5°C, What us the energy cont

Morgarella [4.7K]

Answer:

30 g. 8'C

Explanation:

the 10 g is plus the fact that I have to help you get the chance to get the answer

5 0

3 years ago