Students planted one hundred flowers. They obscrvod the growth of their

plants once a week. Which tool could be used to record their observations?

ruler

thermometer

computer

A student has 5 mL of 0.300 M (NH4) 2CrO4 solution. What is the concentration of NH4 + in this solution?

The molecule below contains both an aldehyde and a ketone functional group. select only the carbonyl carbon atom of the aldehyde functional group. identify the carbon atom by selecting the atom and assigning it a map number of 1.

The difference between paper chromatography and thin layer chromatography is that

Exit How many grams are in a mole of hydrogen chloride (HCl) ? 1 H 1.01 Hydrogen 17 Cl 35.45 Chlorine

What can you do in your daily life to conserve energy?

When you kick a soccer ball across a field it will eventually come to a stop. Does this prove or disprove Newton's first law of motion? It disproves Newton's first law of motion because gravity is stronger than friction.

Particle model to predict what will happen if a sharp object creates a hole in the soccer ball

If a new substance is formed in a chemical reaction, what atoms do they consist of?

What is a scientific explanation for a range of hypotheses and observations supported by testing

A chemical reaction involves the rearrangement of atoms to form new molecules. During a chemical reaction, however, atoms are neither created nor destroyed. Which of the following is true about the atoms involved in a chemical reaction? A.