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this formula equation is unbalanced.
pb(no3)2(aq) + li2so4(aq) → pbso4(s) + lino3(aq)
which coefficient should appear in front of lino3 in the balanced equation?
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what is the volume occupied by 40 grams of argon gas (ar) at standard conditions? what volume, in liters, is occupied by 1.5 x 1023 

a: 45.9 meters

b: 4.29 seconds

step-by-step explanation:

a: h(t)=1/2(-9.8)(3)^2+0(3)+90

h(t)=-4.9(3)^2+90

h(t)=-44.1+90

h(t)=45.9 meters

b: 0=1/2(-9.8)(t^2)+0t+90

0=-4.9t^2+90

-90=-4.9t^2

18.37=t^2

t=4.29 seconds

in the second question, the numbers aren't exact, but they're a close approximation.

air

in a tire you fill a tire with air

then a couple days later you check the air pressure in the tire

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