What is is the variable and experimenter chooses to change

You are making a 1L solution that you want to be buffered with ammonia and ammonium. However ammonia is a gas that is difficult to dissolve directly in water with good precision.

What is the mass of a light bulb

If you have 600 g of c6h12o6 then how many grams of oxygen are there

Based on our theory of how our own solar system formed, we would expect that other solar systems would be quite common. Based on our theory of how our own solar system formed, we would expect that other solar systems would be quite common.

A student is trying to solve the following problem by selecting the tile shown. Mass of container Which of the following statements is true? A. The student chose the wrong tile to solve the problem. B.

Which of the following characteristics do all plants share? a. being unicellular b. producing flowers c. being a prokaryote d. being an autotroph

Electrons have A) A positive charge and relatively low mass B) A negative charge and relatively high mass C) A neutral charge and relatively high mass D) A negative charge and relatively low mass

What are the main reactants and products in a neutralization reaction?

Which condition will release more energy when an electron changes levels? From n = 4 to n = 3 from n = 3 to n = 2 from n = 2 to n = 1

The density of red wine is 1.01g/cm3 and the density of olive oil is 0.92g/cm3. A salad dressing that consisted of these two ingredients was left sitting too long. The ingredients separated in the bottle, which ingredient is which layer? Explain.