Which mass is easily forgotten about when trying to prove the law of conservation of mass in a chemical reaction.

1water

2salt

3gas

4rock

How many chiral carbon atoms does the monosaccharide galactose have?

Which of the following is a reason to make an armature the parent of a creature

Where do plants obtain their energy A the sun B from animals C from scavenging D from the moon

What effect did the discovery of gallium have on the acceptance of the periodic table?

In the pie chart below, which of the following represents the amount of Earth's water located in the oceans? A pie chart with part A representing 2%, part B representing. 8%, part C representing. 2% and part D representing 97%.

What is the pressure, in mm Hg, of 2.50 moles of an ideal gas if it has a volume of 50.0 liters when the temperature is 27.0° C?

What element has the same valence electrons as carbon A) N B) AI C) Si or D) Be

What element is represented by the following electron configuration: 1s22s22p63s23p64s23d4 Question 2 options: Cr Ca Ge Ar

He substance, cocl2, is useful as a humidity indicator because it changes from pale blue to pink as it gains water from moist air. What is its name?

The weighted average atomic mass of an element depends upon the a. relative abundance of protons in the element b. mass and relative abundance of each isotope of that element c. mass and relative abundance of each neutron of that element d.