Jack is asked to determine the number of pennies in $1.00. Jill is asked to determine the number of liters in 1 gallon. Whose answer will be an exact number, and whose answer will be measured?

Io, one of Jupiter's moons, is about the size of Earth's moon. Io has a radius of about 1.85 x 106 m, and the mean distance between Io and Jupiter is 4.22 x 108 m. Jupiter has a mean radius of 7.15 x 107m, and a mass of 1.90 x 1027kg.

To sterilize a 50.0-g glass baby bottle, we must raise its temperature from 22.0ºc to 95.0ºc. how much heat transfer is required?

What is the concentration of an unknown Mg (OH) 2 solution if it took an average of 15.4mL of 0.100M HCl solution to neutralize 10.0mL of the Mg (OH) 2 solution? Your answer

In an effort to reduce the number of deaths due to Malaria, Scientist have successfully introduce a gene into mosquitoes. The gene makes the mosquito unable to support the development of the parasite that causes malaria.

4. How many molecules are equal to 2.25 moles of sulfur dioxide?

When a conductor is passed through a magnetic field, a current is induced in the

What is a slogan for sulfur that rhymes

The hydrogen atomic emission spectrum includes a UV line with a wavelength of 92.3 nm. Is this line associated with a transition between different excited states or between an excited state and the ground state?

In one step in the synthesis of the insecticide Sevin, naphthol reacts with phosgene as shown. C10H8O+COCl2⟶C11H7O2Cl+HCl Naphthol Phosgene A. How many kilograms of C11H7O2Cl form from 2.5*10*2 kg of naphthol? B. If 100. g of naphthol and 100.

A. 5 kg pizza is sitting on a kitchen counter 1.5 m high. How much potential energy does the pizza have?