2 years ago

How to find a girl frind at age 70

Chemistry

2 answers:

GREYUIT [131]2 years ago

3 0

Answer:

are you rich? if not then give up

Explanation:

Savatey [412]2 years ago

3 0

Your only chance is to become a sugar daddy good luck

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Which chemical equations show a precipitation reaction?

Anestetic [448]

A and D

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2 years ago

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How many grams are in 9.05 x 1023 atoms of silicon

UkoKoshka [18]

Answer:

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Explanation:

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2 years ago

A student heats 10.52 g of sodium hydrogen carbonate in a crucible until the compound completely decomposes to sodium carbonate

saveliy_v [14]

Answer:

$m_{Na_2CO_3}^{theoretical}=6.636gNa_2CO_3$

Explanation:

Hello!

In this case, since the decomposition of sodium hydrogen carbonate is:

$2NaHCO_3(s)\rightarrow Na_2CO_3(s)+H_2O(g)+CO_2(g)$

Thus, since there is a 2:1 mole ratio between the sodium hydrogen carbonate and sodium carbonate, and the molar masses are 84.01 and 105.99 g/mol respectively, we obtain the following theoretical yield:

$m_{Na_2CO_3}^{theoretical}=10.52gNaHCO_3*\frac{1molNaHCO_3}{84.01gNaHCO_3}*\frac{1molNa_2CO_3}{2molNaHCO_3} *\frac{105.99gNa_2CO_3}{1molNa_2CO_3}\\\\ m_{Na_2CO_3}^{theoretical}=6.636gNa_2CO_3$

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2 years ago

Write the empirical formula of at least four binary iconic compounds that could be formed from the following ions:

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