If the heat involved in a chemical reaction has a negative sign,

A. heat is lost to the surroundings.

B. heat is gained from the surroundings.

C. no heat is exchanged in the process.

A scientist wants to make advances in the way skin cancer patients are treated. What is something she should do first? O A. Study the side effects of her new treatment. O B. Look at the success rate of the current treatments. O C.

Where is water vapor

What has56 protons and 54 electrons and 74 neutrons

If the half life of a first order reaction is 24 days. Calculate the rate constant for the reaction

Find the value of 6 + 6 + 6 + 16 + vo

Referring to an activity series, which of the following combinations of reactants would not produce a successful single-replacement reaction? Zn + CuSO4 Ca + MgSO4 Ag + SnSO4 K + Na2SO4

What is the difference between the energy of spring A, stretched 0.6 meters, and spring B, stretched 0.3 meters, if they have the same spring constant?

Which level of organization describes an oak tree forest with bacteria, fungi, dead leaves, butterflies, blue jays, stones? A) biome B) biosphere C) community D) ecosystem

How is an oxidation half-reaction written using the reduction potential chart? How is the oxidation potential voltage determined?

A can of soda is 335ml what is 2 cans of soda in ml