A "mole is a common unit of measurement in chemistry. You may not be familiar with moles, but one of the advantages of dimensional analysis is that you can work with any units as
long as you know equivalent measurements.
One mole of water is equivalent to 18 grams of water. A mug of water was measured to contain 250 grams of water. How many moles of water is this?
Choose the two fractions that are multiplied together to calculate the solution using dimensional analysis. You must have the correct two selected before checking your answer to
get credit.
mole
18 grams
250 grams
18 grams
I mole
250 grams
How many moles of water is this? Round your answer to one decimal place.
X
moles

The answer to your question is 13.9 moles

Step-by-step explanation:

Process

1.- Use proportions to solve this problem

                               1 mol of water 18 grams of water

                               x moles of water 250 grams of water

                               x = (250 g x 1 mol )/18 g

                               x = 13.9 moles of water

In the dimensional analysis, cancel grams and the units will be moles.

answer: 10 meter

step-by-step explanation:

need details

3. (5x + 1) - (-10x + 6)

simplify the answer choice. combine like terms. remember to distribute the negative to the terms inside the second parenthesis. also remember that two negatives = one positive, and one of each sign = negative.

- (-10x + 6) = + 10x - 6

simplify. combine like terms:

5x + 1 + 10x - 6

5x + 10x + 1 - 6

15x - 5

∴ it is your answer

~