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AleksAgata [21]

2 years ago

15

What Is Matter? Someone help me plzzz

1 answer:

adelina 88 [10]2 years ago

3 0

Answer:

matter is anything with mass and volume

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If an atom of sodium combines with (captures) an alpha particle that has 2 protons and 2 neutrons, its new mass number will be

GuDViN [60]

Answer:

27 amu

Explanation:

The alpha particles is Helium nuclei.

Atomic mass is the sum of the neutrons and protons.

Helium have two protons and two neutrons thus its atomic mass is 4 amu.

₂He⁴

Sodium atom have 12 neutrons and 11 protons. Thus its mass number will be

23 amu.

When it combine with alpha particle it mass will be 27 amu.

23 amu + 4 amu = 27 amu.

Thus new sodium atom have 14 neutrons and 13 protons.

6 0

3 years ago

In the laboratory you dissolve 19.4 g of potassium acetate in a volumetric flask and add water to a total volume of 125 mL. What

aleksandrvk [35]

The molarity of the potassium acetate solution given the data is 1.584 M

<h3>What is molarity? </h3>

This is defined as the mole of solute per unit litre of solution. Mathematically, it can be expressed as:

Molarity = mole / Volume

<h3>How to determine the mole of CH₃COOK</h3>

Mass of CH₃COOK = 19.4 g
Molar mass of CH₃COOK = 98 g/mol
Mole of CH₃COOK =?

Mole = mass / molar mass

Mole of CH₃COOK = 19.4 / 98

Mole of CH₃COOK = 0.198 mole

<h3>How to determine the molarity of CH₃COOK</h3>

Mole of CH₃COOK = 0.198 mole
Volume = 125 mL = 125 / 1000 = 0.125 L
Molarity of CH₃COOK = ?

Molarity = mole / Volume

Molarity of CH₃COOK = 0.198 / 0.125

Molarity of CH₃COOK = 1.584 M

Learn more about molarity:

brainly.com/question/15370276

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5 0

1 year ago

What is the volume of 1g of ice in cm3?

Amanda [17]

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What is the volume of 1g of ice in cm3?

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What is the volume of 1g of ice in cm3?

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What is the volume of 1g of ice in cm3?

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3 0

3 years ago

Type the letter of the correct answer in the blank space. The image shows the combustion of methane. Which equation represents t

Talja [164]

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CH4 + 2O2 → CO2 + 2H2O

Explanation:

7 0

2 years ago

Which is a spectator ion in the reaction between Ba(NO3)2(aq) and (NH4)3PO4(aq)

nataly862011 [7]

<span>NH4+ and NO3- because barium phosphate is insoluble </span>

8 0

3 years ago

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