Which coefficient of O2 is needed to balance the equation C3H8 + O2 → 3CO2 + 4H2O?

a. 2

b. 3

c. 5

d. 6

If you are pushing a box toward your friend with a force of 20 N, and your friend is pushing the box toward you with a force of 30 N, what will happen to the box

What happens to the demand for butter, if the price of margarine increases? For Economics.

When two satillites orbit at at different distances which goes faster?

What is the correct order needed for a lunar eclipse to happen?

Based on the periodic table shown above, elements in which of the following groups are the poorest conductors of electricity?

Two sinusoidal waves are moving through a medium in the positive x-direction, both having amplitudes of 7.00 cm, a wave number of k=3.00m-1, an angular frequency of ω=2.50s-1, and a period of 6.00 s, but one has a phase shift of an angle ϕ=π12rad.

Which season does the Southern Hemisphere experience when it is tilted toward the sun? A. winter B. summer C. spring D. autumn

For an ideal fluid flowing through a horizontal pipe, Bernoulli's principle and the continuity equation state that the pressure within the pipe does which of the following? (Assume measurements are taken along the pipe in the direction of fluid flow.

A bowling ball has a mass of 40kg and is kicked with a force of 10 N. What is it's acceleration

Sciencium-380 has a half-life of 3 days. If you started with a 100 gram sample, how much Sciencium-380 will remain after 9 days?