Does dissolution or crystallization produce heat?

A group of students perform three trials in a lab and determine the density of aluminum to be 2.1, 2.12, and 2.09 g/cm³ if the true density of aluminum is 2.7 g/cm³ what is the percent error of their lab

An engineer chooses to use bamboo as a building material because it grows quickly and needs little space to grow. This is an example of Apex

If you measured the mass of an apple in New York, and then again in China, how would the masses compare? OA) The mass in New York would be larger. OB) The mass in New York would be smaller. OC) The masses in both locations would be the same.

A direct-current power supply of low voltage (less than 10 volts) has lost the markings that indicate which output terminal is positive and which is negative.

Hich is an example of a chemical change? mixing of poster colors formation of clouds metal corroding in salt water sugar dissolving in water separating salt from seawater

A living thing that cannot make its own food and must eat other living things for energy

Which best explains why astronauts appear weightless when they are in a space shuttle orbiting Earth? • They are falling toward Earth at the same rate as the space shuttle.

If increase the amplitude how does the velocity change? (No google)

What is the result of multiplying (2.5 * 1010) * (3.5 * 10-7) ? Use the correct number of significant digits.

What is 0.002353 to two significant figures