Answer:
A good experimental hypothesis can be written as an if, then statement to establish cause and effect on the variables. If you make a change to the independent variable, then the dependent variable will respond
Answer:
B
Explanation:
You add them all together if I'm correct. (I'm in middle school so don't get mad if its wrong lol)
The answers to you questions are 3,66 g of liquid water and 0,84 g of vapor.
Solution:1) Q₁ = mxCxΔT = 4,5 g x 2,108 J/°C x g x 10°C.
= 97,86 J heat required to warm the ice to 0°C.
2) = 4,5 g x 334 J/g. = 1503 J heat required to melt the ice to water at 0°C.
3) = 4,5 g x 4,184 J/°C x g x 100°C
= 1882,28 J heat required to warm the water from 0°C to 100°C. = 5400 J - 3483,14 J = 1916,86 J heat left to vaporize the water.
mass of the vapor= 1916,86 J ÷ 2257 J/g
= 0,84 g.
Answer:
Im pretty sure the answer is A. An electron moves from the FIFTH energy level down to the SECOND energy level.
Explanation:
Answer:
Calcium = 20 protons
Gold = 79 protons
Copper = 29 protons
Iron = 26 protons
Explanation:
Atomic Number = #protons and neutrons
Calcium (Ca)
Atomic Number: 20
Protons: 20
Gold (Au)
Atomic Number: 79
Protons: 79
Copper (Cu)
Atomic Number: 29
Protons: 29
Iron (Fe)
Atomic Number: 26
Protons: 26
