the relative molecular mass of sodium hydroxide is 40. if 60 grams of sodium hydroxide are dissolved in water how many moles will there be in the solution?

Answers

Answer 1

Answer: The formula to find the amount of moles of a substance used is: actual mass divided by relative molecular mass.

Therefore,
60/40 = 1.5 moles

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When a warm air mass is caught between two cooler air masses and the thicker cold air masses move underneath the thinner warm air mass and push it upward is what type of weather front?

Answers

An occluded front forms when a warm air mass is caught between two cooler air masses. The warm air mass is cut ofl or occluded' from the ground. The occluded warm front may cause clouds and precipitation. A swirling center of low air pressure is called a cyclone.

When a warm air mass is caught between two cooler air masses and the thicker cold air masses move underneath the thinner warm air mass and push it upward. Occluded front symbol – The directions that the bumps face is the direction the front is moving.

Here is a food chain. Use this food to chain to answer this question.Which organism is a carnivore?
A.
grasshopper

B.
fungus

C.
spider

D.
grass

Answers

A carnivore is something that eats meat so C. spider would be a Carnivore
Hope i helped :)

The answer would be C. Spider

_Cuo +H, → _Cu + _H,0

Answers

Answer:

CuO(s) + H₂(g) → Cu(s) + H₂O(l)

Explanation:

Assuming the reaction is the reduction of CuO by H₂
Then the balanced equation for the reaction is;

CuO(s) + H₂(g) → Cu(s) + H₂O(l)

The equation shows the reducing property of hydrogen gas, such that hydrogen reduces metal oxides such as copper(ii)oxide to the respective metals.
The law of conservation requires chemical equations to be balanced so as the mass of reactants will be equal to that of products.

In this case; there is 1 copper atom, 1 oxygen atom and 2 hydrogen atoms on both side of the equation and thus the equation is balanced.

Would a screwdriver be an example of technology? Why or why not?

Answers

Technology is anything made my man to make tasks easier. So yes, a screwdriver is technology.

No because they is no electricity going through it because it is a hand held device Hope this helps Have a great day Smile More

Which statement best describes the temperature of the oceans surface water

Answers

The temperature changes in the water and climate up willing all the fish to go away from the surface

Answer:

Areas at high latitudes have the coldest water.

Explanation:

Surface water receives its heat from the sun.

I took the test and it was right 100% :)

What is the key difference between organic and inorganic molecules

Answers

Answer:

See the answer below, please.

Explanation:

Organic compounds are those produced by living beings (molecules associated with living beings) and correspond to carbon compounds (the main difference with inorganic compounds). The latter are produced by natural processes or in the laboratory.

Example of organic products: alkanes (methane), alcohols (ethanol or ethyl alcohol)

Example of inorganic products: sodium hydroxide, sodium chloride

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