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hram777 [196]
3 years ago
5

The elements which make up water can only be separated by chemical means; therefore, water is:

Chemistry
1 answer:
skelet666 [1.2K]3 years ago
5 0
I think the correct answer from the choices listed above is the last option. The elements which make up water can only be separated by chemical means; therefore, water is a compound. It<span> is a substance formed when two or more chemical elements are chemically bonded together. Hope this answers the question.</span>
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Room temperature is usually considered to be 25°C. What is that in kelvins?
kotegsom [21]

Answer:

298.15 K.

Explanation:

Room temperature is generally taken to be 25 °C (around 77 °F). 0 °C is equivalent to 273.15 K, so we add 273.15 to 25 to find that room temperature is around 298.15 K

5 0
3 years ago
What is the molarity of a solution in which 25.3 grams of potassium bromide is dissolved in 150. mL of solution?
irga5000 [103]

Answer:

~1.417M

Explanation:

Molarity=(number of moles of solute)/(litres of solution)

In this case, we need to find moles of potassium bromide.

Mass=25.3g

Molar mass= 119g/mol

moles=(mass/molar mass)

        =(25.3)/(119)

        =0.2126moles of potassium bromide

Molarity=(0.2126)/(150/1000)

       ~1.417M

Hope this helps:)

6 0
3 years ago
Read 2 more answers
If the volume of a substance is measured with a graduated cylinder, the unit of measure for volume will be:
nirvana33 [79]

Answer:Today they will practice measuring different liquids. They will use a container called a graduated cylinder to measure liquids. Graduated cylinders have numbers on the side that help you determine the volume. Volume is measured in units called liters or fractions of liters called milliliters (ml).

Explanation:

8 0
3 years ago
The combustion of ________ has added great quantities of carbon dioxide to the atmosphere. Group of answer choices
forsale [732]

Answer:

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Explanation:

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7 0
3 years ago
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