You cut a piece of wood and sand it to make a model. What kind of change occurred? A. chemical change B. substance change C. phase change D. physical change

What weather variable do meteorologists measure when they are preparing to make a weather forecast?

What organisms appeared on Earth First? a). gastropods b). horn corals c). brachiopods d). crinoids

A 50.0-mL sample of a 1.50 M NaOH solution is titrated with a 2.90 M HCl solution. What will be the final volume (sample + titrant) of solution when the NaOH has been completely neutralized by the HCl?

Static charges can be applied to neutral objects by friction, induction or conduction. What do all of these methods utilize to create this charge? a. protons b. electrons c. heat energy

You have a ballon filled with hydrogen gas which keeps it at a constant pressure, regardless the volume. The initial volume of the gas is 736 mL at 15.0 C. The gas is heated until it's volume is 2.

A Gran plot for a potentiometric titration resulted in a slope of 5.56 x 105. Measurements were made using SCE as the reference electrode and the analyte Eo was determined to be 0.354 V.

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In which choice is the ellipsis used correctly to select from this sentence from The Scarlet Letter? A throng of bearded men, in sad-coloured garments and grey steeple-crowned hats, inter-mixed with women, some wearing hoods, and others bareheaded,

Explain the difference between the greenhouse effect and global warming.

How does adding salt affect the surface tension of water? if it increases surface tension, will it always increase it?