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3 years ago

How to find the subscript in a chemical formula?

1 answer:

3 0

To determine the correct subscripts in a chemical formula, you have to solve how many atoms you need to balance the charge! (:

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What is the volume, in liters, of 2.00 moles of hydrogen at STP?

Ber [7]

The volume of one mole of any gas at STP is 22.4 L. So, at STP, the volume of 2.00 moles of hydrogen gas would be (22.4 L/mol)(2 mol H2) = 44.8 L.

8 0

3 years ago

What is the molarity of a potassium triiodide solution, ki3(aq), if 30.00 ml of the solution is required to completely react wit

oee [108]

The molar concentration of the KI_3 solution is 0.0833 mol/L.

Step 1. Calculate the moles of S_2O_3^(2-)

Moles of S_2O_3^(2-) = 25.00 mL S_2O_3^(2-) ×[0.200 mmol S_2O_3^(2-)/(1 mL S_2O_3^(2-)] = 5.000 mmol S_2O_3^(2-)

Step 2. Calculate the moles of I_3^(-)

Moles of I_3^(-) = 5.000 mmol S_2O_3^(2-)))) × [1 mmol I_3^(-)/(2 mmol S_2O_3^(2-)] = 2.500 mmol I_3^(-)

Step 3. Calculate the molar concentration of the I_3^(-)

c = "moles"/"litres" = 2.500 mmol/30.00 mL = 0.083 33 mol/L

5 0

4 years ago

Read 2 more answers

In your own words, write a definition for ecology

azamat

Answer:

Ecology is the study of how organisms interact with one another and with their physical environment.

Explanation:

3 0

3 years ago

An object accelerates 8.2 m/s2 when a force of 20.1 Newton's is applied to it. What is the mass of the object?

Shalnov [3]

Hey it's me again haha!

the answer to your question is:

answer: so f=20.1

a=8.2

m=?

f=ma

20.1 = 8.2*m in

20.1/8.2=m

so the answer is around 2.45 something!
also i'm sorry this question had be stumbled!

5 0

3 years ago

Read 2 more answers

Could Someone Help Me As Soon As Possible Please?

Elena L [17]

Different ions are given in the question which forms different compounds which are given below.

<h3>Explanation:</h3>

Sodium ion and fluoride ion forms Sodium Fluoride or NaF.

Potassium ion and Sulphide ion forms Potassium Sulphide or K₂S.

Nickle ion and sulphate ion forms Nickle sulphate or Ni₂SO₄.

Aluminum ion and oxide ion forms Aluminum oxide or Al₂O₃.

Calcium and chlorate forms calcium chlorate or Ca(ClO₃)₂.

Ammonium and phosphide forms ammonium phosphide or (NH₄)₃P.

Copper nitrate is the next product or Cu(NO₃)₂.

Lead oxide is the next product which is PbO₂.

Lithium carbonate is the next compound which is Li₂CO₃

The next compound is calcium iodide.

The next compound is sodium carbonate.

The next compound is Gallium Chlorate.

The next compound is Copper Fluoride.

The next compound ammonium phosphate.

The next compound is ferrous sulphate.

The next compound is magnesium nitrate.

The next compound is ammonium nitrite.

The next compound is Potassium acetate.

The next compound is sodium dichromate.

3 0

3 years ago