You weigh two different objects on the same scale in the same location on Earth. The weights are different. What must be different about the two objects?

Determine the only possible 2 ion for which the following two conditions are both satisfied: The net ionic charge is one-tenth the nuclear charge. The number of neutrons is four more than the number of electrons.

Which unit is most commonly used for measuring pressure? a. m^3 b. bar c. N/m^3 d. Celsius

How long does it take for a ketchup to dry on clothes

Suppose you added a spoonful of sugar to hot water and another to ice-cold water. which type of water will cause the sugar to dissolve more quickly?

Write the acid-base reaction that occurs when an aqueous solution of HCl is added to an aqueous solution of NaOH. (Use the lowest possible coefficients. Omit states-of-matter in your answer.

What starting matirials do cells need for cellular respiration

What is the velocity of a wave with a frequency of 77 Hz and a wavelength of 200 m?

For the reaction: n2 (g) + 3h2 (g) ⇔ 2nh3 (g), at a particular temperature, the concentrations of n2, h2 and nh3 are 2.1 x 10-3 m, 3.2 x 10-2 m, and 1.8 x 10-1 m, respectively. calculate a value of k for this reaction

Empirical formula for 6. 63.52% Fe, 36.48% S

Name the term used for the configuration of a stereoisomer having R groups whose positions alternate from one side to the other side along the backbone chain.