What method of heat transfer can occur in a vaccum

All chemical reactions convert one substance into another. select one: a. true. b. false.

What force is needed to accelerate a truck with mass 3,000 kg at a rate of 2.0 m/s22 O A. 1500 N O B. 6000 N O C. 12,000 N O D. 3000 N

To calculate an answer to the correct number of significant figures, you must complete all calculations first and then round your final answer as the very last step. You are asked to calculate the volume of a rectangular prism that has a length of 5.

Which equations are in standard form? Check all that apply y=2x + 5 2x + 3y = - 6 4x + 3y = 12 * £x+3 = 6 3x-y=5 5x + 3y = 1

What is the Molarity of a solution with 1.8 mil KCl dissolved to a volume of 1.5L

A system consists of two components, each of which must activate if the system is to activate. One component has a reliability of. 99. The other has a reliability of. 95. The components are independent of one another with respect to reliability.

Which of the following energy level changes for an electron is most energetic? 3 → 2 5 → 2 4 → 2

Is baking soda a element compound homogeneous mixture or heterogeneous mixture?

For the reaction: C (CH3) 3I + Cl - → C (CH3) 3Cl + I- What is the activation barrier for the SN2 reaction mechanism, in units of kcal/mol? Provide your answer to the nearest 0.1 kcal/mol.

Which of the following utilizes the measurement of a short - or long-lived radioactive element, with its decay product, to determine the absolute age of an object? A. varves B. radiometric dating C. dendrochronology