Oxygen, sulfur, and tungsten are all examples of what type of matter? compound element heterogeneous mixture solution

Enzymes called kinases are responsible for a. removing electrons from substrates b. enzymes that catalyze the transfer of protons from one molecule to another c. adding hydrogens to substrates d. adding phosphate groups (i. e.

A student mixes 100 mL of 0.50 M NaOH with 100 mL of 0.50 m HCl ina styrofoam cup and observes a temperature increase of delta T1. When she repeats this experiment using 200o mL of each solution, she observes a temperature change of delta T2.

Name three elements contained in blue vitriol

Which kind of substance needs more energy to undergo an increase of 25 degrees Celsius something with a high or low specific heat?

If i have 4 moles of a gas at a pressure of 5.6 atm and a volume of 12 liters, what is the temperature? (205 K)

Americium-241 is used in some smoke detectors. it is an alpha emitter with a half-life of 432 years. how long will it take in years for 45.0 % of an am-241 sample to decay?

What is the purpose of forming a scientific hypothesis? It starts a plan to test your idea It provides the answer to your investigation It allows you to prove your idea is correct

N2 + 3h2 2nh3 how many moles of hydrogen are needed to completely react with two moles of nitrogen?

While in Europe, if you drive 119 km per day, how much money would you spend on gas in one week if gas costs 1.10 euros per liter and your car's gas mileage is 30.0 mi/gal? Assume that 1euro=1.26dollars.

What type of star has an absolute brightness of 1 and a surface temperature around 7,500 °C?