How many moles are there in 2.6 x 10^24 atoms of Calcium?

a. 7.0 x 10-24 moles of Ca

b. 4.4 moles

c. 168.36 moles

d ...10 moles

1. What is the amount of energy required to raise the temperature of 150 grams of aluminum by 10°C? A. 0.897 J B. 13.45 J C. 1345.5 J D. 4.18 J 2. If you have an endothermic reaction, heat energy is written on the product side of the equation.

What does health and living mean

Type the correct answer in each box. (1.20 x 104) Ⓡ (2.152 x 102) = x 106 208 5.3

What it the oxidation number for cl? A. - 2 B. + 2 C. - 1 D. + 1

When hand warmers are activated, do they create energy?

Which of the following choices are types of energy? (Select all that apply) cube energy visible energy nuclear energy kinetic energy

Hanna hypothesizes that granite is denser than sandstone. How can Hanna test her hypothesis?

It is possible to determine the environment of sedimentation for various sand dunes by

Which change results in the formation of different substances? (1) burning of propane (2) melting of NaCl (s) (3) deposition of CO2 (g) (4) solidification of water

Suppose that a solid cube of some material floats on the surface of an oil puddle at a service station with 75.1 % of its volume submerged. The density of the oil is 923 kg/m 3. What is the density of the cube's material