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3 years ago

What is the S.I unit of pressure?

Chemistry

1 answer:

Vesna [10]3 years ago

5 0

Answer:

pascal(pa)

Explanation:

the unit of pascal (pa), defined as a force of one newton per square meter. the conversion between atm ,pa, torr is as follow : 1 atm =101325 pa= 760 torr.

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Step 1: Translate the starting chemicals into formulas:Iron metal, in the presence of oxygen,----->Step 2: Predict the produc

Natalija [7]

Answer:

Explanation:

Here, we want to write the chemical reaction

step 1:

we start by writing the reaction between iron and oxygen

We have this as:

$\text{ Fe + O}_2$

step 2:

Now, we want to predict the product as follows:

$\text{ Fe + O}_2\text{ }\rightarrow Fe_2O_3$

step 3:

We proceed to balance the chemical reaction as follows by ensuring that the number of elements moles on the reactant side is equal to the number of moles of the elements on the products side as follows:

$\text{ 4Fe + 3O}_2\text{ }\rightarrow2Fe_2O_3$

3 0

1 year ago

What do you think is the effect of acid rain on rusting ?

stich3 [128]

As acid rain is a mixture of pollutants and gasses. As rusting is a chemical reaction between oxygen and other gasses in the air alongside a material and a liquid. I would say they are both similar and that acid rain would speed the process of rusting/aid the process.

8 0

4 years ago

Helium is most likely to behave as an ideal gas when its under what?

rodikova [14]

Answer:

Low pressure and high temperature :)

Have an amazing day!!

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7 0

2 years ago

Sodium hydroxide is available commercially as a 50.0% by weight aqueous solution. The density of the solution is 1.53 g/mL. Calc

bulgar [2K]

Answer:

[NaOH] = 19.1 M

Last option.

Explanation:

Sodium hydroxide is available commercially as a 50.0% by weight aqueous solution.

50% by weight means, that in 100 g of solution we have 50 grams of solute.

Molar mass of solute: 40 g/m

Mass / Molar mass = moles

50 g / 40 g/m = 1.25 moles

These are the moles of solute in 100 grams of solution, so we must use density data, so we can find out our volume.

Solution density = Solution mass / Solution volume

1.53 g/mL = 100 g / Solution volume

Solution volume = 100 g / 1.53 g/mL

Solution volume = 65.3 mL

1.25 moles of solute are in 65.3 mL of solution

Molarity = moles /L

Let's convert 65.3 mL in L

65.3 / 1000 = 0.0653 L

1.25 moles /0.0653 L = 19.1 M

3 0

4 years ago

Organelles that use energy from sunlight to produce food are called mitochondria

arsen [322]

Answer:

Organelles that use energy from sunlight to produce food are called mitochondria.

False

3 0

3 years ago