How many joules of heat is lost when a 64 g piece of copper cools from 375 oC to 26 oC? The specific heat of copper is 0.38 J/goC.

How is sugar water classified? as a homogeneous mixture as a compound as a heterogeneous mixture as an element

How many moles would contain 1.50 x 1024 atoms of sodium?

Empirical formula for h2SO4

Define atomic mass and molecular mass

How does increasing the number of electrons affect the emission spectrum

A gas mixture with a total pressure of 770 mmHg contains each of the following gases at the indicated partial pressures: 128 mmHg CO2, 232 mmHg Ar, and 183 mmHg O2. The mixture also contains helium gas.

Where would you expect to find water stored in a solid form

Calculate the molar mass of NH4NO3.

What is the charge on the Few ion in the ionic compound FeCl³?

A sphere has a mass of 64 g, and a density of 2.0 g/cm3. what is the radius of the sphere