3.) If it takes 3.0 Calories to increase the temperature of one gram of a substance 1 degree Celsius, how many Calories of heat must be added to 30.0 grams of the substance to increase the temperature
one degree Celsius? (No phase change takes place.)
a.) 20 Calories
b.) 90 Calories
c.) 60 Calories
d.) 3 Calories
e.) None of the above.

What are the first two quantum numbers for the electrons located in subshell 4d? what are the first three quantum numbers for the electrons located in subshell 2s? how many electrons can be held in a sublevel l = 3? how many electrons can be held in the energy level n = 4? how many electrons in an atom can share the quantum numbers n = 4 and l = 3?

Question 3(multiple choice worth 4 points) (04.04 lc) what does it mean when an element is reduced? it empties a valance shell, reducing its atomic radius. it gains electrons, reducing its overall charge. it increases electronegativity, reducing its ability to bond. it loses electrons, reducing its electron number.

Why is the bottom layer of a trophic pyrimid the