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kiruha [24]
3 years ago
15

Which is a mixture?

Chemistry
2 answers:
Rama09 [41]3 years ago
5 0
Potassium and chlorine
Eva8 [605]3 years ago
4 0

Answer: Option (d) is the correct answer.

Explanation:

When two different atoms with similar composition are combined together by a chemical reaction then the product formed is known as compound.

For example, Potassium chloride is a compound as it has 1:1 composition, that is, one potassium atom is combined with one chlorine atom.

On the other hand, potassium metal is an element because it consists of only atoms of potassium.

Whereas when two different elements combine together and have different composition then it results in the formation of a mixture.

For example, potassium and chloride is a mixture as we cannot tell its composition without conducting an experiment.

Thus, we can conclude that out of the given options potassium and chlorine is a mixture.

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Jobisdone [24]

6.6 × 10^{10} J = 6.2 × 10^{7} British thermal units

First of all, we should know that 1 British thermal unit = 1055 Joules.

From question, heat = 6.6 × 10^{10} J

1 BTU = 1055 J

6.6 × 10^{10} J = \frac{1}{1055} ×  6.6 × 10^{10} British thermal units

                   = 6.2 × 10^{7} British thermal units

1000 Joules = 1 kilojoule

A kilojoule is a unit of measure of energy, in the equal way that kilometers degree distance. meals energy used to be measured in energy  and some international locations still use those gadgets.

The power we get from foods and drinks is measured in kilojoules. that is the metric time period for calorie. Kilojoules and energy constitute the equal aspect. One calorie is ready four kilojoules.

Calorie a unit for measuring warmth same to the quantity of warmth required to elevate the temperature of one gram of water one diploma Celsius.

Learn more about kilojoules here :- brainly.com/question/490326

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4 0
1 year ago
Which one is correct
anyanavicka [17]

Answer:

number 3.

Explanation:

4 0
3 years ago
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You place 12.0 milliliters of water in a graduated cylinder. Then you add 15.0 grams of metal to the water and the new water lev
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Answer:

<h3>The answer is 7.85 g/mL</h3>

Explanation:

The density of a substance can be found by using the formula

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volume = 13.91 - 12 = 1.91 mL

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We have the final answer as

<h3>7.85 g/mL</h3>

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Cobalt-62 is a radionuclide with a half life of 1.5 minutes. What fraction of
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