when 3.648 g of epsom salt were heated to constant mass at 250°c, 1.782 g of mgso4 powder remained. what is the value of x?

*will mark you brainliest + 15 points ** why does the equilibrium of a system shift when the pressure is increased? a. to maximize the stress on the system b. to stop restoring equilibrium to the system c. to increase the total moles of gas in the system d. to decrease the total moles of gas in the system

For each of the compounds below, show that the charges on the ions add up to zero. a. kbr b. cao c. li(2)o d. cacl(2) e. alcl(3)

Will mark brainliest how many electrons can be held in the energy level n = 4?