Calculate the number of grams of citric acid, CHO, needed to make 2500 ml of 0.4 CHO

Which element does X represent in the following expression: 2512X?

Dr. Brown's science class is studying changes in particle motion during phase changes by adding a few pieces of dry ice to a flask and covering it with a balloon. After a few minutes they observed the balloon starting to inflate.

Which of the following statements is true? Question 4 options: A) Neutrons have a negative charge. B) Electrons have a negative charge. C) The n=1 shell can hold eight electrons.

If an atom has 35 protons in the nucleus, how many electrons will it have orbiting the nucleus?

How do electrons impact the movement of electricity?

What is the volume of an object whose dimensions are 5.54 cm, 10.6 cm, and 199 cm? Round your answer to the correct number of significant figures. A. 117 cm3 B. 1.20 * 104 cm3 C. 1.17 * 104 cm3 D. 11686.076 cm3

What type of reaction is BaI^2+H^2SO^4 2H+BaSO^4

Is the mass of an atomic nucleus greater or less than the sum of the masses of the nucleons composing it? Why don't the nucleon masses add up to the total nuclear mass?

Consider the equilibrium system below. If the system is at dynamic equilibrium, which statement is true? a. Sublimation of the NH4CI crystals stops. b. Solidification of the NH4CI vapors stops. c.

What happens to the atomic radius as the atomic number increases down and why