What is the amount of protons neutron and electrons in the element Calcium?

Why is there a need for increased recycling to preserve phosphorus

A balloon filled with 39.1 moles of helium has a volume of 876 l at 0.0'c and 1.00 atm pressure. the temperature of the balloon is increased to 38.0'c as it expands to a volume of 998 l, the pressure remaining constant.

If 1 mole of HCl (aq) was reacted with 2 moles of NaOH (aq), the pH of the solution would be? Acid or base

Chose the mathematical formula expressing work.

What does the plant weed like og kush contains?

In which time period did Ancient Greek philosophers propose that all matter was composed of four fundamental substances: earth, air, water, and wind? 8000 B. C. - 1000 B. C. 1000 B. C. - 450 B. C. 300 B. C. - 1400 A. D. 1774 - 1794 A. D.

You are assembling cars, and your job is to put the wheels on the vehicles. You have 3520 wheels, 14040 nuts (4 nuts per wheel) and 1000 car bodies at the start of the day.

Predict what would happen to life on earth if the Earth suddenly stopped rotating on its tilted axis?

The most common isotope of chromium has a mass number of 52. which notation represent a different isotope of chromium?

What is the molar mass of 37.96 g of gas exerting a pressure of 3.29 on the walls of a 4.60 L container at 375 K?