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3 years ago

According to anthropologists, why did people moved to the Northern Nile River? (Site 1)

Chemistry

1 answer:

balu736 [363]3 years ago

4 0

Answer:

The correct answer is - it provided water, food, transportation, and excellent, fertile soil for growing food.

Explanation:

People of Egypt moved to the northern Nile river due to various reasons. In this region, the soil is very excellent and helps in growing crops as the soil is fertile due to the appropriate climate and water resources.

It is aso helps in selling and transporting the products as it was a trade route at the time. As it is known Egypt has almost no rainfall so the only way crops can get water is through the Nile river.

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Which Of the following, the best explanation for the fact that most gases are easily compressed is that the molecules in a gas a

Otrada [13]

Answer: A. are relatively far apart

Explanation:

Compressbility is the ability of compound to reduce in size when pressure is applied.

Gaseous state is a state in which the particles are loosely arranged and have a lot of space between them. Thus molecules can be easily compressed.

They have highest kinetic energy. This state has indefinite volume as well as shape. The molecules in the gaseous state move faster with an increase in temperature as the kinetic energy increases with increase in temperature.

Thus most gases are easily compressed is that the molecules in a gas are in constant motion are relatively far apart.

4 0

3 years ago

PLEASE ANSWER

LuckyWell [14K]

Answer:

D. His device would not be successful because radio waves do not have enough energy to kill the bacteria.

Explanation:

3 0

3 years ago

Please help 15 points

Rus_ich [418]

Nitrogen gained 4 electrons.

Because Nitrogen's redox number went from +6 to +2, it must have gained 4 electrons (-4) in order to achieve this number. Thus, Nitrogen is reduced.

4 0

3 years ago

An ice cube at 0.00C with a mass of 8.32g is placed Into 55g of water, initially at 25C. If no heat is lost to the surroundings,

devlian [24]

Answer:

The final temperature of the entire water sample after all the ice is melted, is 12,9°C. We should realize that if there is no loss of heat in our system, the sum of lost or gained heat is 0. It is logical to say that the temperature has decreased because the ice gave the water "heat" and cooled it

Thats all i know

7 0

3 years ago

How would you prepare 1.00 L of a 0.400M solution of copper(II)sulfate, CuSO4?

Ber [7]

We need to dilute 0.400 mol of copper (II) sulfate, how do we know, how many weigh of $CuSO_4$ we have to dilute??

It's simple.

$\eta=\frac{m}{MM}$

Using a periodic table we can find the molar mass of $Cu,~~S~~and~~O$

$MM_{CuSO_4}=153.9~g/mol$

Then

$m=\eta*MM$

now we can replace it

$m=0.400*159.6$

$\boxed{\boxed{m=63.84~g}}$

Then we have to dilute 63.84 grams of copper (II) sulfate in 1 L of water to obtain a solution with 0.400M

3 0

3 years ago

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