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3 years ago

Radioactive americium-241 is used in household smoke detectors and in bone mineral analysis.

Chemistry

1 answer:

Varvara68 [4.7K]3 years ago

4 0

Answer:

Electrons- 95

Protons- 95

Neutrons-146

Explanation:

An atoms is made up of three fundamental particles; electrons, protons and neutrons,

Americium belongs to the f block in the periodic table. It is an actinide element.

An atom of Am-241 contains 95 protons, 95 electrons and 146 neutrons.

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Write the formula for calcium chloride

Sauron [17]

CaCI2 is for calcium chloride

7 0

3 years ago

Which pictures shows the proper structure of the water molecule? Click the picture to see each choice.

Yuliya22 [10]

The third picture is the answer

Explanation:

there are 2 hydrogen atom 1 oxygen

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2 years ago

The density of the hydrocarbon in part (a) is 2.0 g l-1 at 50°c and 0.948atm. (i) calculate the molar mass of the hydrocarbon. (

Vedmedyk [2.9K]

1. Answer;

=56 g/mol

Explanation and solution;

PV = nRT

nRT= mass/molar mass (RT)

molar mass = (mass/V ) × (RT/P)

= Density × (RT/P)

Molar mass = 2.0 g/L × (0.0821 × 323 K)/0.948 atm

Molar mass = 56 g/mol

2. Answer;

Molecular mass is C4H8

Explanation;

Empirical mass × n = molar mass

Empirical mass for CH2 = 14 g/mol

Therefore;

56 g/mol = 14 g/mol × n

n = 4

The molecular formula= 4(CH2)

= C4H8

7 0

2 years ago

Help me please!!!!!!!!

alekssr [168]

Answer:

The element is CARBON

The number 6 refers to the ATOMIC NUMBER

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how many protons and neutrons are in the first isotope?

6. 6

how many protons and neutrons are in the second isotope?

6. 7

how many protons and neutrons are in the third isotope?

6. 8

you are welcome :)

8 0

2 years ago

8. Why would it be a bad idea to make coins made of sodium metal?

Elina [12.6K]

Answer:

Sodium reacts with the oxygen in air. It reacts vigorously with oxygen and the moisture that is already present in the air and thus catches fire.

5 0

3 years ago