A chemist pumps hydrogen gas (H2) from a tank

into a reaction vessel containing 0.734 mol O2.

The gases react to form water. If all of the available

O, reacts, how many moles of H2 are used?

Mark has seven tickets. Hannah gives him six more tickets. how many tickets does Mason have in all?

What percent of 77 is 60?

What is the percentof change from 10 to 9

Tara runs an amusement park ride and needs to count the people who get on the ride. At the beginning of her shift, 132 people had ridden the ride. The table shows the total number of riders for several times during Tara's shift.

Find the sixth term of the sequence 14,9,4, ...

Solve and simplify '8 - y + 7y = 40

What is the solution of 12b=18

How can we solve fractions

F (x) = 2x-1 and g (x) = - x+5 what is the solution of f (x) = g (x)

The radius of a circle is 1 millimeter what is the circle area