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4 years ago

What is H20 more commonly known as?

Chemistry

1 answer:

Bad White [126]4 years ago

6 0

Answer:

water

Explanation:

The scientific name for water is H2O. It is called H2O because it has two atoms of hydrogen (H) and one atom of oxygen (O)

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A mixture of He, Ne and Ar has a pressure of 7.85 atm. If the Ne has a mole fraction of 0.47 and Ar has a mole fraction of 0.23,

Lena [83]

Answer:

2.355atm

Explanation:

To get the pressure of helium, we need to get the mole fraction of helium.

The total mole fraction for any mixture of gases equals 1. Hence to get the mole fraction of the helium, we simply subtract the addition of the mole fractions of neon and argon from 1.

This means - 1 - 0.47 - 0.23 = 0.3

Now, to get the pressure of the helium gas, we simply multiply the total pressure by 0.3. This is 0.3 * 7.85 = 2.355 atm

5 0

3 years ago

An object has a mass of 15.2 g and a volume of 8.9 mL. <br> What is the density of the object?

Murljashka [212]

Answer:

recordando también que ** 1mL = 1cm ^ 3 **

(como ** 1 dm ^ 3 = 1 L **)

8 0

3 years ago

2. What mass of sodium chloride is produced when chlorine gas reacts with 2.29 grams of sodium iodide? The unbalanced equation i

Damm [24]

Answer:

0.88g

Explanation:

The reaction equation:

2NaI + Cl₂ → 2NaCl + I₂

Given parameters:

Mass of Sodium iodide = 2.29g

Unknown:

Mass of NaCl = ?

Solution:

To solve this problem, we work from the known to the unknown.

First find the number of NaI from the mass given;

Number of moles = $\frac{mass}{molar mass}$

Molar mass of NaI = 23 + 126.9 = 149.9g/mol

Now insert the parameters and solve;

Number of moles = $\frac{2.29}{149.9}$ = 0.015mol

So;

From the balanced reaction equation;

2 moles of NaI produced 2 moles of NaCl

0.015mole of NaI will produce 0.015mole of NaCl

Therefore;

Mass = number of moles x molar mass

Molar mass of NaCl = 23 + 35.5 = 58.5g/mol

Now;

Mass of NaCl = 0.015 x 58.5 = 0.88g

8 0

3 years ago

Which explains the change in ionization energy that occurs between removing the first and second electrons from an atom?

Novay_Z [31]

The change that exist in ionization energy that occurs between removing the first and second electrons from an atom is that the <span> ionization energy increases because the ratio of the protons to electrons increases. The answer is letter B.</span>

4 0

3 years ago

Brainliest!!!!!!Parking lots and other man made ground coverings may increase erosion around there edges

ollegr [7]

Answer:

true trust ong gotta be true fff

4 0

3 years ago