Which of the following substances will cause the least temperature change if the same amount of each substance is added to 1.0 kg of water?

A. K3PO4

B. CuSO4

C. CH4OH

D. MgCl2

When 1.95 g of co (no3) 2 is dissolved in 0.350 l of 0.220 m koh, what are [ co2+], [ co (oh) 42-], and [ oh-] if kf of co (oh) 42 - = 5.00 * 109?

Timothy is planning to leave home to go on a long trip. His mother told him to take his cell phone in case of an emergency. What is one way that cell phone technology may not be beneficial in this situation?

When the fluid cools, the kinetic energy of the inolecules decreases. This causes the molecules to slow down and move closer together. Sines the molecules are closer together, the density of the fluid increases and the fluid sinks.

If an atom of the twelfth element (magnesium) has an atomic mass of 25, how many protons (p), neutrons (n), and electrons (e) does it have?

You have 200 g of a substance with a molar mass of 150 g/mol. How many moles of the substance do you have? 0.75 mol 1.00 mol 1.33 mol 1.50 mol

What physical property is changed when a waitress pours coffee from a pot into four mugs? temperature density volume color

Calcule o calor especifico do estanho sabendo que foram necessarias 100 cal para elevar em 20ºC a temperatura de 100 g de estanho

What's the smallest part of a compound

The inertness of the noble gases is due to a. the outermost shell has six electrons. b. the bonds they form with other elements. c. the number of protons and neutrons. d.

Xander is gaining weight. Which best describes what he can do to prevent obesity? exercise every day and also make healthy choices in his diet excercise once a week but make no change in his diet exercise once a week and also make healthy choices in