Answer:
Explanation:
A number in scientific notation has the form N × 10ⁿ
where N is a decimal number called the mantissa and n is an integer called the exponent.
We must have 1 ≤ N < 10
Step 1. Determine the mantissa
Move the decimal place to the left to create a new number between 1 and 10.
145 000 000 ⟶ 1.450 000 00; N = 1.45
Step 2. Determine the exponent.
The exponent is the number of times you moved the decimal to get the mantissa.
You moved the decimal eight places to the left, so the exponent n = 8.
Step 3. Write the number in scientific notation
The number in scientific notation is .
Answer:
3.3 moles of H₂O.
Explanation:
We'll begin by writing the balanced equation for the reaction. This is illustrated below:
4NH₃ + 5O₂ —> 6H₂O + 4NO
From the balanced equation above,
4 moles of NH₃ reacted to produce 6 moles of H₂O.
Finally, we shall determine the number of mole of H₂O produced by the reaction of 2.2 moles of NH₃. This can be obtained as follow :
From the balanced equation above,
4 moles of NH₃ reacted to produce 6 moles of H₂O.
Therefore, 2.2 moles of NH₃ will react to produce = (2.2 × 6)/4 = 3.3 moles of H₂O.
Thus, 3.3 moles of H₂O were obtained from the reaction.
I wanna say it would be 1 would be A 2 would be C 3 would be D 4 would be B and 5 would be E
hope this helps
i think its theory but im not to sure
