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zloy xaker [14]
3 years ago
13

Which element is a metalloid?

Chemistry
2 answers:
Naily [24]3 years ago
8 0

Answer:

helium Because it's in the 9th grade book

Andrews [41]3 years ago
3 0

Answer: B

Arsenic

Explanation:

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Conduction is the act of touching 2 solids where one transfers heat
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What type(s) of intermolecular forces are expected between nocl molecules?
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If you draw or search for the molecular geometry of NOCl, you would know that it has a bent shape. This bent shape is a characteristic of a polar molecule. The dominant intermolecular forces for polar compounds is the <em>dipole-dipole force</em>.
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4 years ago
Mrs. Allen is about to have another baby. She already has three daughters. What is the probability that her fourth child will al
Marat540 [252]

Answer:

The probability her 4th child will be a girl is 0.5

Explanation:

during pregnancy or child birth, the gender of a baby is not affected by the gender of the previous baby in the womb. Rather it is determined by the type of chromosomes supplied by the father of the baby.

If X chromosomes are supplied, a girl will be born because the baby will have xx chromosomes. If Y chromosomes are supplied, the baby will have YY chromosomes which means that he is a boy.

Hence there are equal chances of the baby being a boy or a girl, each time a woman is pregnant. The probability of the baby being  a boy or a girl is the same and it 0.5

7 0
4 years ago
The gases listed are at standard temperature and pressure: · 1 mol of CO2 gas · 1 mol of N2 gas · 2 mol of O2 gas Which statemen
Elena L [17]

Answer : The volume of 1 mole of CO_{2} and N_{2} gases are the same.

Solution: Given,

Moles of CO_{2} = 1 mole

Moles of N_{2} = 1 mole

Moles of O_{2} = 2 mole

Formula used for ideal gas is :

P V = n R T

According to the question, the gases are at standard temperature and pressure. So, the volume of gases only depends on the number of moles. This means that the higher the number of moles, higher will be the volume of gas.

The moles of O_{2} are more than the moles of CO_{2} and N_{2}. So, the volume of O_{2} will be more.

And the moles of CO_{2} and N_{2} are equal. Therefore, their volumes are also equal.

Therefore, the best option is the volume of 1 mole of CO_{2} and N_{2} gases are the same.

6 0
3 years ago
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What happens when an atom forms an ion?
Snowcat [4.5K]

Answer:

An is formed when an atom loses or gains one or more electrons. Because the number of electrons in an ion is different from the number of protons, an ion does have an overall electric charge.

Explanation:

4 0
3 years ago
Read 2 more answers
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