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V125BC [204]
3 years ago
5

What is the different between a mixture and a compound?

Chemistry
1 answer:
krek1111 [17]3 years ago
4 0
A compound is 2 or more substances chemically combined, mixtures arent

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Which of the following elements is a metalloid​
vladimir1956 [14]

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The six commonly recognised metalloids are boron, silicon, germanium, arsenic, antimony, and tellurium. Five elements are less frequently so classified: carbon, aluminium, selenium, polonium, and astatine.

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What is the formula for potassium citrate and how do you find it?
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Answer:

Potassium citrate (also known as tripotassium citrate) is a potassium salt of citric acid with the molecular formula K3C6H5O7.

Chemical formula: K3C6H5O7

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7 0
3 years ago
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Given:
bulgar [2K]

Answer:

The combustion of 59.7 grams of methane releases 3320.81 kilojoules of energy

Explanation:

Given;

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From the combustion reaction above, it can be observed that;

1 mole of methane (CH₄) released 890 kilojoules of energy.

Now, we convert 59.7 grams of methane to moles

CH₄ = 12 + (1x4) = 16 g/mol

59.7 g of CH₄ = \frac{59.7}{16} = 3.73125 \ moles

1 mole of methane (CH₄) released 890 kilojoules of energy

3.73125 moles of methane (CH₄) will release ?

= 3.73125 moles x  -890 kJ/mol

= -3320.81 kJ

Therefore, the combustion of 59.7 grams of methane releases 3320.81 kilojoules of energy

5 0
3 years ago
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Symbol: p

Units: kg x m/s

Explanation:

......

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Answer:

is a way of presenting information about the chemical proportions of atoms

Explanation:

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