3 years ago

What can you say about an atom with 4 protons, 2 neutrons, and 5 electrons?

Chemistry

1 answer:

iren2701 [21]3 years ago

5 0

Explanation:

This is a neutral beryllium atom

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If a drop of blood is 0.05 mL, how many drops of blood are in the blood collection tube that holds 2 mL?

Irina18 [472]

40 drops of blood in a tube that holds 2 mL

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3 years ago

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What quality of electrons determine whether or not an electron will either pair up with another or be able to be shared between

melamori03 [73]

Answer:

Joe

Explanation:

Joe is equal to mama : )

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2 years ago

Which of the following statements is true? Radiation is the transfer of heat between objects which are not touching. An insulato

Licemer1 [7]

Answer:

Radiation is the transfer of heat between objects which are not touching. I think

Explanation:

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1 year ago

1826.5g of methanol (CH3OH), molar mass = 32.0 g/mol is added to 735 g of water, what is the molality of the methane 0.0348 m 1.

Snowcat [4.5K]

Answer:

Molality = 1.13 m

Explanation:

Molality is defined as the moles of the solute present in 1 kilogram of the solvent.

Given that:

Mass of $CH_3OH$ = 26.5 g

Molar mass of $CH_3OH$ = 32.04 g/mol

The formula for the calculation of moles is shown below:

$moles = \frac{Mass\ taken}{Molar\ mass}$

Thus,

$Moles= \frac{26.5\ g}{32.04\ g/mol}$

$Moles\ of\ CH_3OH= 0.8271\ moles$

Mass of water = 735 g = 0.735 kg ( 1 g = 0.001 kg )

So, molality is:

$m=\frac {0.8271\ moles}{0.735\ kg}$

<u>Molality = 1.13 m</u>

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3 years ago

A diver dives off of a raft - what happens to the diver? The raft? How does this relate to Newton's Third Law?

sukhopar [10]

Answer:

Reaction Force!!

Explanation:

The diver moves “forward" and dives into the water. The raft moves "backwards” in the water because of the reaction force. The action force is the diver pushing off of the raft, and the reaction force is the raft pushing back on the diver (causing the diver to go forward and into the water).

Hope this helps you!!!

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2 years ago