What is the mass of 5 moles of helium (He) atoms?

In the figure shown below, m < 40 and ab =8. which equation could be used to find x?

It took alice 5 5/6 hours to drive to her grandparents' house for . on the way home, she ran into traffic and it took her 7 3/8 hours. how much longer did the return trip take? write your answer as a proper fraction or mixed number in simplest form. the trip home took __hours longer. ?

What is the t intercept of the line given by the equation below y= -10x + 14