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3 years ago

10

1.42 g/cm^2 to mg/mm^2

1 answer:

Paul [167]3 years ago

7 0

1 g = 1000 mg and 1 cm2 = 100 mm2. So 1 g/cm2 = 10 mg/mm2. Then the answer should be 14.2 mg/mm2.

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10) Aluminum is a highly reactive metal that oxidizes when exposed to air. Which of these would be a good first step in balancin

PtichkaEL [24]

Hello!

(Missing)

<span>A) Put a coefficient of 3 on Al
B) Put a coefficient of 3 on O2
C) Put a coefficient of 2 on O2
D) Put a coefficient of 3 on Al2O3

A good first step to balance this reaction is Put a coefficient of 3 on O</span>₂.

All the other options don't balance an atom but putting a coefficient of 3 on O₂ achieves the goal of starting to balance Oxygen on both sides of the equation. The next step after that would be to put a coefficient of 2 on Al₂O₃ and there would be 6 Oxygen atoms on both sides of the equation.

Have a nice day!

3 0

4 years ago

Read 2 more answers

300.0 mL of a 0.335 M solution of NaI is diluted to 700.0 mL. What is the new concentration of the solution?

Reptile [31]

Answer: The new concentration of the solution is 0.143 M.

Explanation:

Given: $V_{1}$ = 300.0 mL, $M_{1}$ = 0.335 M

$V_{2}$ = 700.0 mL, $M_{2}$ = ?

Formula used is as follows.

$M_{1}V_{1} = M_{2}V_{2}$

Substitute values into the above formula as follows.

$M_{1}V_{1} = M_{2}V_{2}\\0.335 M \times 300.0 mL = M_{2} \times 700.0 mL\\M_{2} = 0.143 M$

Thus, we can conclude that the new concentration of the solution is 0.143 M.

8 0

4 years ago

Choose all of the following mole ratios that are correct for the reaction given below. Be sure to choose all that apply.

Dennis_Churaev [7]

Answer:

2 moles NH3 = 1 mole of N2

3 moles of H2 = 1 mole of N2

3 moles of H2 = 2 moles of NH3

Explanation:

The balanced equation for the reaction is given below:

N2 + 3H2 —> 2NH3

From the balanced equation above,

1 mole of N2 reacted with 3 moles of H2 to produce 2 moles of NH3.

Thus, we can say that:

1 mole of N2 = 3 moles of H2

1 mole of N2 = 2 moles of NH3

3 moles of H2 = 2 moles of NH3

Thus, considering the options given above, the right answers to the question are:

2 moles NH3 = 1 mole of N2

3 moles of H2 = 1 mole of N2

3 moles of H2 = 2 moles of NH3

5 0

3 years ago

Read 2 more answers

Which occurs when the forward and reverse reactions occur at the same rate? The system is conserved. The reactants and products

nikitadnepr [17]

When the forward and reverse reaction rates are occuring at the same rate, the system is at equilibrium

5 0

3 years ago

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HELP ILL MARK BRAINLIEST PLS

zzz [600]

Answer:

a.

can be made up of a combination of different elements.

5 0

3 years ago