A balloon at an amusement park has 1,500 g of gas. By what amount will the mass of the balloon decrease if all the gas inside it escapes?

750 g
1,500 g
2,000 g
3,000 g

If all the gas inside the balloon escapes, the mass of the balloon will decrease by 1,500 g. Therefore, the correct answer is 1,500 g.

If all the gas inside the balloon escapes, the mass of the balloon will decrease by the amount of gas it contained, which is 1,500 g. Therefore, the correct answer is:

1,500 g

To find the amount by which the mass of the balloon will decrease if all the gas inside it escapes, we need to subtract the mass of the gas from the initial mass of the balloon.

Given that the balloon has 1,500 g of gas and assuming that the gas has no mass when it escapes, the amount by which the mass of the balloon will decrease is 1,500 g.

Therefore, the correct answer is 1,500 g.