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3 years ago

The majority of metals are found within

Chemistry

1 answer:

Lena [83]3 years ago

8 0

The majority of metals are found in ores.

But a few such as copper, gold, platinum, and silver frequently occur in the free state because they do not readily react with other elements.

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Give examples of:<br> chemical reactions in the kitchen.<br> • chemical reactions in living things.

Veronika [31]

chemical reactions in the kitchen

Baking soda and vinegar create carbon dioxide. In both of these cases, a chemical reaction between a solid and liquid creates a new substance, a gas. Both yeast and baking soda can be used to create a gas.

chemical reactions in living things

when you hard boil an egg, the hydrogen sulfide produced by heating the egg white can react with iron from the egg yolk to form a grayish-green ring around the yolk.

3 0

2 years ago

Read 2 more answers

Describe the energy in coal and the way in which it’s converted to electrical energy. Write 50 to 100 words.

devlian [24]

Answer:

Coal contains chemical potential energy

Explanation:

Chemical species are known to contain chemical energy. Chemical energy is contained in chemical bonds in a chemical substance.

Since energy can neither be created nor destroyed, energy contained in chemical bonds can be transformed from one form to another. Coal contains chemical energy.

One of the ways of generating electricity is the combination of fossil fuels. This involves the conversion of chemical energy to heat energy. The steam produced is used to turn a turbine. The turning off the turbine implies a conversion of heat to mechanical energy. The turning of the turbine now produces electrical energy.

4 0

2 years ago

What is the rule when "ao" or "oo" are together when naming covalent bonds

Gnoma [55]

They are converted into a single “o” when "ao" or "oo" are together when naming covalent bonds.

<h3>What is a covalent bond?</h3>

A covalent bond consists of the mutual sharing of one or more pairs of electrons between two atoms.

Sometimes, while naming the chemical compounds, a problem arises when compounds with “ao” and “oo” are written with -ide name. Conventionally, they are converted into a single “o”.

For example, the “ao” in the dichlorine hept-ao-xide ( $Cl_2O_7$ ). This “ao” in the $Cl_2O_7$ can be converted into “o”. As the result, the correct name of this compound would be dichlorine hept-o-xide.

Hence, they are converted into a single “o” when "ao" or "oo" are together when naming covalent bonds.

Learn more about the covalent bond here:

brainly.com/question/12661797

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8 0

2 years ago

Given the formula of a compound:

Sindrei [870]

Answer:

C3H6

Explanation:

8 0

3 years ago

What is the empirical formula of ascorbic acid (Vitamin C). If Carbon is 40.91%, Hydrogen is 4.5% and Oxygen is 54.50%. Show you

kkurt [141]

Answer:

In 100 g of ascorbic acid, we will have 40.92 g C, 4.58 g H, and 54.50 g O. The whole-number ratio gives us the subscripts for the empirical formula. Thus, the empirical formula is C3H4O3.

Explanation:

When given % composition, and asked for the empirical formula, it is easiest to just assume 100 g of material. Thus,

Mass C = 40.92 g. Moles C = 40.92 g x 1 mole/12 g = 3.41 moles C

Mass H = 4.58 g. Moles H = 4.58 g x 1 mole/1.0 g = 4.58 moles H

Mass O = 54.50 g. Moles O = 54.50 g x 1 mole/16 g = 3.41 moles O

Next, we want to get the moles into whole numbers, so we begin by dividing all by the smallest, i.e. divide all by 3.41.

Moles C = 3.41/3.41 = 1

Moles H = 4.58/3.41 = 1.34

Moles O = 3.41/3.41 = 1

Now, in order to get 1.34 to be a whole number we multiply it (and all others) by 3

Moles C = 1x3 = 3

Moles H = 1.34x3 = 4

Moles O = 1x3 = 3

Empirical Formula = C3H4O3

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Miss Hawaii

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2 years ago