What is the enthalpy change (in kj) of a chemical reaction that raises the temperature of 250.0 ml of solution having a density of 1.25 g/ml by 9.20 °c? (the specific heat of the solution is 3.74 joules/gram-k.) ?

A power supply generates 82.4 W of power and produces a voltage of 20.7 V what is the current produced in amperes

As a particle moves 10.0 m along an electric field of strength 75 N/C, its electrical potential energy decreases by 4.8 * 10-16 J. What is the particle's charge?

A ball thrown upward near the surface of the Earth with a velocity of 50 m/s will come to rest about 5 seconds later. If the ball were thrown up with the same velocity on Planet X, after 5 seconds it would be still moving upwards at nearly 31 m/s.

If an atom is neutral how many electrons are there compared to the number of protons?

The atomic radii of a divalent cation and a monovalent anion are 0.35 nm and 0.129 nm, respectively. (a) Calculate the force of attraction between these two ions at their equilibrium interionic separation (i. e.

What are starburst galaxies and what do they have to do with galaxy evolution?

Six light bulbs are connected in series with a 9.0 volt battery. What is the voltage across each bulb?

Can an object travel at the speed of light? Why or why not?

It's a hot and sunny day and you decide to go for a drive. When you open your car door, it's a lot hotter than outside. Why is that

Which compound is composed of oppositely charged ions