How to put a pure substance in a sentence

With all his heart Neil Armstrong weighed 360 pounds on earth and when he landed on the mood he weighed 60 pounds why? A. his mass changed while traveling to the moon B. the gravity on the mood is six times the gravity on earth C.

You dissolve 10 grams of sugar in a hundred mL of water in one container and another 10 grams of sugar and 500 mL of water in a different container which one would taste sweeter? Why?

Taste buds at the back of your tongue are most responsive to sweet. True False

Which outcome is not caused by gravitational force?

Using the following thermochemical data, what is the change in enthalpy for the following reaction: 3H2 (g) + 2C (s) + ½O2 (g) → C2H5OH (l) C2H5OH (l) + 3O2 (g) →2CO2 (g) + 3H2O (l), ΔH = - 1367 kJ/mol C (s) + O2 (g) →CO2 (g), ΔH = - 393.

How many moles of oxygen are formed when 58.6 g of KNO3 decomposes according to the following reaction? 4 KNO3 (s) → 2 K2O (s) + 2 N2 (g) + 5 O2 (g)

What was the ratio in the formula for iron (II) oxide

2C18H38 + 5502 → 36CO2 + 38H2O

What is the opposite of osmosis

Acid rain most often damages stone architecture by causing