Hello can u answer these quickly? 1- If element X has 6 protons. How many electrons does it have?

2- If element Y has 10 protons. What is its atomic number?

3- If element Z has 15 protons & 17 neutrons. What are its number of electrons, atomic number & mass number?

4- If element A has 7 electrons & 9 neutrons. How many protons does it have? And what is its atomic number?

1- If the atomic number of an element is 15 & its mass number is 31? How many protons & neutrons does this element have?

2- If element B has 9 electrons. Find the number of protons & atomic number.

3- If the mass number of element A is 60 & number of neutrons is 33. Find its number of protons & its atomic number.

Hot air balloons float in the air because of the difference in density between cold and hot air. in this problem, you will estimate the minimum temperature the gas inside the balloon needs to be, for it to take off. to do this, use the following variables and make these assumptions: the combined weight of the pilot basket together with that of the balloon fabric and other equipment is w. the volume of the hot air inside the balloon when it is inflated is v. the absolute temperature of the hot air at the bottom of the balloon is th (where th> tc). the absolute temperature of the cold air outside the balloon is tc and its density is ďc. the balloon is open at the bottom, so that the pressure inside and outside the balloon is the same. as always, treat air as an ideal gas. use g for the magnitude of the acceleration due to gravity.

Can someone me with questions 15 to 17 plz.

How does a noncompetitive inhibitor reduce an enzyme’s activity?