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3 years ago

Can someone help me ;) Will be marking someone brainliest ! Thank you...<3

Chemistry

1 answer:

chubhunter [2.5K]3 years ago

6 0

1. The name of this element is Carbon because there are 6 electrons in the shell.

2. Sorry I didn't learn that. And I don't know.

1. A metal is a solid substance, usually hard. On the other hand, a non-metals is a solid or gaseous material, in which the metallic properties are absent.

2. When a new substance is formed at that time we can understand that chemical reaction has taken place. It can't be reversed.

4. Neutron = no charge

Electron = negative

Proton= positive

5. Nucleus has a positive charge.

6. An atom is bigger. Because electrons are what takes up space in atoms, the result is that the size of the biggest filled orbital determines the size of the atom or ion.

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Which of the following samples will have the greatest volume at STP?

Tamiku [17]

Answer:

Option b. 22 g of He will have the greatest volume at STP

Explanation:

In order to determine the volume, we apply the Ideal Gases Law equation:

P . V = n . R . T

V = n . R . T / P

R, T and P are the same in all the situation we must define n (number of moles).

The one that has the greatest number of moles will have the greatest volume at STP

22 g of Ne . 1mol / 20.1 g = 1.09 moles of Ne

22g of He . 1mol / 4 g = 5.5 moles of He

22 g of O₂ . 1mol / 32g = 0.68 moles of O₂

22 g of Cl₂ . 1mol / 70.9 g = 0.31 moles of Cl₂

4 0

3 years ago

Which of the following units is an SI base unit?

Kisachek [45]

Answer:

Explanation:

kilogram√

m³×

cm×

l×

5 0

3 years ago

How do microwaves help heat frozen food?

hodyreva [135]

Answer:

Microwaves cook food by heating the liquid water it contains. Even frozen food contains some liquid water, at least on the outside surface exposed to warm air on the way from the freezer to the oven.

Explanation:

mark as brainliest pls!!!

6 0

3 years ago

Read 2 more answers

How many liters of o2 do you have if you have 5.8 moles of o2

polet [3.4K]

Answer:

130 Liters

Explanation:

if 1 mol is 22.4 L, then 5.8 mol is 130 L (129.92 but use sig figs)

3 0

3 years ago

PLZ HELP!!

Nataly [62]

A and B are experiencing winter. The picture which isn't available here in this question is attached below.

Option C.

<h3><u>Explanation:</u></h3>

The earth is tilt by an angle of 23.2° to the vertical plane. This makes the seasonal variation of earth, because in some time of the year, the northern hemisphere faces the sun directly, experiencing summer and then southern hemisphere is away from summer experiencing winter and vice versa. The summer occurs when the place directly faces the sun. And the winter happens when the place obliquely faces the sun or doesn't face the sun at all.

Here in this diagram, we can see that the points A and B are the north pole and the part in northern hemisphere respectively which aren't facing the sun directly, whereas C and D are facing the sun. Thus the southern hemisphere is experiencing summer and the northern hemisphere the winter.

4 0

3 years ago