Suppose you increase your walking speed from 7 m/s to 13 m/s in a period of 1 s. what is your acceleration?

How is the rate of reaction influenced by a catalyst?

Classify the following compounds as having covalent or ionic bondsa. dinitrogen trioxideb. carbon dioxidec. calcium chlorided. magnesium nitridee. sodium bromidef. aluminum oxide

A company is interested in buying a new machine to replace their outdated equipment. However, before committing to the purchase, the company asks the manufacturer to provide data on a certain machine's efficiency.

You mix a yellow liquid with water, and they seem to distribute evenly, leaving one pastel yellow solution. You then mix a blue liquid with water, and the blue liquid stays as it's own layer on top.

For the process described, compare ΔH with ΔE of the system. A solid yields a mixture of gases in an exothermic reaction that takes place in a container of variable volume. A. ΔH is less than (more negative) Δ E of the system. B.

Which formula represents a solution? No explanation needed.

When electrons are removed from the outermost shell of a calcium atom, the atom becomes A) an anion that has a larger radius than the atom. B) an anion that has a smaller radius than the atom. C) a cation that has a larger radius than the atom.

A molecule of an unsaturated hydrocarbon must have 1) at least one single carbon-carbon bond 2) at least one multiple carbon-carbon bond 3) two or more single carbon-carbon bonds 4) two or more multiple carbon-carbon bonds

A 8.85 g sample of hydrate of sodium carbonate, Na2CO3 ∙ XH2O was heated carefully until no more mass was lost from the sample. After heating, the final weight of the material was 7.55 g. How many moles of water left the compound? 0 moles

PF3Br2 is a nonpolar molecule. Based on this information, determine the F-P-F bond angle, the Br-P-Br bond angle, and the F-P-Br bond angle. Enter the number of degrees of the F-P-F, Br-P-Br, and F-P-Br bond angles, separated by commas (e. g.