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3 years ago

What is the density of this cube?

Chemistry

2 answers:

zlopas [31]3 years ago

8 0

Answer:

32gcm3

so yea i hope this helps u

Fofino [41]3 years ago

8 0

Answer:

4 g / cm^3

Explanation:

Mass = 32 g

Volume of cube = 2 x 2 x 2 = 8 cm^3

Formula : -

Density = Mass / Volume

Density = 32 / 8

Density = 4 g / cm^3

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How many grams of NaOH are produced with the reaction of 5.00 moles of water? *

Andre45 [30]

Answer:

200 grams of NaOH are produced with the reaction of 5.00 moles of water

Explanation:

First of all you apply a rule of three to know the amount of moles of NaOH as follows: if 2 moles of water produce 2 moles of NaOH, 5 moles of water how many moles would they produce?

$moles of NaOH=\frac{5 moles of water*2 moles of NaOH}{2 moles of water}$

moles of NaOH= 5

Being:

Na: 23 g/mole
O: 16 g/mole
H: 1 g/mole

the molar mass of NaOH is: 23 g/mole + 16 g/mole + 1 g/mole= 40 g/mole

Then a rule of three applies as follows: if in 1 mole there are 40 g of NaOH, in 5 moles how much mass is there?

$mass=\frac{5 moles*40g}{1 mole}$

mass= 200 g

200 grams of NaOH are produced with the reaction of 5.00 moles of water

4 0

4 years ago

Look at the equation CO2 + H2 = CO + H20.

sergejj [24]

Answer:

CO is considered as a product.

Explanation:

A general chemical equation for a combination reaction follows:

To write a chemical equation, we must follow some of the rules:

The reactants must be written on the left side of the direction arrow.

A '+' sign is written between the reactants, when more than one reactants are present.

An arrow is added after all the reactants are written in the direction where reaction is taking place. Here, the reaction is taking place in forward direction.

The products must be written on the right side of the direction arrow.

A '+' sign is written between the products, when more than one products are present.

For the given chemical equation:

are the reactants in the reaction and are the products in the reaction.

Hence, CO is considered as a product.

3 0

3 years ago

Which term best describes the rate at which glacial erosion takes place? Thanks

schepotkina [342]

Glacial erosion is the process by which a glacial flows over the land, picking up rocks.

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3 years ago