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3 years ago

Does gold react with other chemicals easily

1 answer:

6 0

Gold isn't very reactive (it's low on the reactivity table). It doesn't react with oxygen or halogens with any ease, nor does it tend to dissolve in acid.

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How many moles of H20 are needed to produce 1 mole of O2 in the following equation?

Alex787 [66]

2 moles is the answer

6 0

3 years ago

What amount of carbon dioxide (in moles) is produced from the reaction of 2.24 moles of ethanol with excess oxygen?

algol13

Answer : The amount of carbon dioxide produced is, 197.12 grams.

Explanation : Given,

Moles of ethanol = 2.24 mole

Molar mass of carbon dioxide = 44 g/mole

The balanced chemical reaction will be,

$C_2H_5OH+3O_2\rightarrow 2CO_2+3H_2O$

First we have to calculate the moles carbon dioxide.

From the balanced chemical reaction, we conclude that

As, 1 mole of ethanol react to give 2 moles of carbon dioxide

So, 2.24 mole of ethanol react to give $2\times 2.24=4.48$ moles of carbon dioxide

Now we have to calculate the mass of carbon dioxide.

$\text{Mass of }CO_2=\text{Moles of }CO_2\times \text{Molar mass of }CO_2$

$\text{Mass of }CO_2=4.48mole\times 44g/mole=197.12g$

Therefore, the amount of carbon dioxide produced is 197.12 grams.

8 0

3 years ago

What is the most likely reason that mendeleev placed tellurium before iodine? mendeleev observed that tellurium has chemical pro

Len [333]

<span>it is A. Mendeleev observed that tellurium has chemical....</span>

5 0

3 years ago

Read 2 more answers

PLEASEEEE HELP :')

mel-nik [20]

Answer:

340 grams Ca₃P₂ (2 sig. figs.)

Explanation:

3Ca + 2P => Ca₃P₂

5.6 mole + excess => ? grams

Convert the 'known' to a coefficient of 1 by dividing all coefficients by 3.

=> Ca + 2/3P => 1/3Ca₃P₂

From the above, 1 mole of Ca => 1/3 mole Ca₃P₂

∴ 5.6 mole Ca in an excess of P => 1/3(5.6 mole) Ca₃P₂

=> 1.8666 mol Ca₃P₂ (calculator answer) ≅ 1.9 mol Ca₃P₂

=> 1.9 mole x 182 g Ca₃P₂/mol Ca₃P₂ = 339.73333 grams Ca₃P₂

≅ 340 grams Ca₃P₂ (2 sig. figs.)

7 0

3 years ago

What is one thing that all measurements have?

lbvjy [14]

A number and a unit?

6 0

3 years ago