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3 years ago

What what is the equation for percent error

1 answer:

5 0

When you calculate results that are aiming for known values, the percent error formula is useful tool for determining the precision of your calculations. The formula is given by: The experimental value is your calculated value, and the theoretical value is your known value.

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How many hydrogen atoms are in 7.80 mol of ammonium sulfide?

Alexus [3.1K]

The number of hydrogen atoms that are in 7.80 moles of ammonium sulfide are 3.756 x 10^25 atoms

<u>calculation</u>

Step 1: calculate the moles of H in (NH4)2S

since there are 8 atoms of H in (NH4)2S the moles of

H = 8 x7.80 = 62.4 mole

Step 2: use of Avogadro's law constant to determine the number of H atom

that is 1 mole = 6.02 x10^23 atoms

62.4 moles=? atoms

cross multiplication

= [ 62.4 x 6.02 x10^23]/ 1 mole= 3.756 x10^25 atoms

7 0

3 years ago

Read 2 more answers

What is the noble Gas notation for Bromine (Br)?

PSYCHO15rus [73]

3d10 4s2 4p5. I think

6 0

2 years ago

“The chemical formula in the structure of phosphorus is shown below. This represents a(n)....”

den301095 [7]

Answer:

element made up of four (4) similar atoms.

Explanation:

An element is made up of one kind of atom. A compound is made up of 2 or more different kinds of atoms that are chemically together.

5 0

3 years ago

You must answer all questions to get credit for this assignment. Use the notes above and/or the textbook to help you find the an

Allisa [31]

Explanation:

(1). It is known that in a reaction equation, reactants are placed or written on left hand side and products are written on the right hand side.

For example, $N_{2} + 3H_{2} \rightarrow 2NH_{3}$

Hence, in a reaction equation you start with the reactants and end up with the products.

(2). The number of atoms in a reaction will remain the same because according to the law of conservation of mass, mass of reactants will be equal to the mass of products.

Therefore, number of atoms on the reactant side will be equal to the number of atoms on product side.

7 0

3 years ago

An atom has 6 electrons in its outer orbit. It will most likely form an ion with a charge of:

GenaCL600 [577]

Answer:

Explanation:

4 0

2 years ago