Answer:
A measurement is the action of measuring something, or some amount of stuff. So it is important to measure certain things right, distance, time, and accuracy are all great things to measure. Measurements can also allow us to make desicions based on the outcome of the measurement
Answer:
V₁ = 31.5 mL
Explanation:
Given data:
Initial molarity = 2.50 M
Initial volume required = ?
Final molarity = 0.150 M
Final volume = 525 mL
Solution:
Formula:
M₁V₁ = M₂V₂
M₁ = Initial molarity
V₁ = Initial volume
M₂ = Final molarity
V₂ = Final volume
Now we will put the values in formula.
2.50 M × V₁ = 0.150 M × 525 mL
V₁ = 0.150 M × 525 mL/ 2.50 M
V₁ = 78.75 M.mL/ 2.50 M
V₁ = 31.5 mL
Answer:
2NaF + 1Br2 -> 2NaBr + 1F2
Explanation:
2NaF + 1Br2 -> 2NaBr + 1F2
I simply looked at both the left side and right side and saw there was only 1 F on the left side while there were 2 on the right side.
This means we have to make the left side have 2 F by multiplying NaF by 2.
However, this means there are now 2 Na as well. Going back to the right side, I multiplied NaBr by 2 so that there are 2 Na on both sides.
Now there are 2 Br on the right side. Checking back to the left side, there are also 2 Br, meaning this equation is now balanced.
I had the same question, it's most likely B.
Reactants on the left and products on the right