Which of the following phase changes is an exothermic change!

sublimation

deposition

vaporization

Melting

What product (s) are expected in the ethoxide-promoted β-elimination reaction of 1-chloro-1-methylcyclohexane? Omit ions, salts, and ethanol from your response.

Ga2O3 (s) + 3SOCl2 (l) - - > 2GaCl3 (s) + 3SO2 In a certain reaction, 71.8 g of Ga2O3 is reacted with 110.8 g SOCl2. The GaCl3 produced is collected and its mass founded to be 97.66 g. What is the theoretical yield of GaCl3?

Calculate the number of moles in 8.00 g of He

These healthcare professionals are usually limited to the types of prescriptions they can write by a set standing orders.

Enter the chemical formula for water. formula:

The volume of 1 mole of o2 gas at T=273k P=1atm is? A 6.02 x 10^-23 ml B 760 L C 22.4 L D 2.24 L E 224 L

There are two stable isotopes of bromine. Their masses are 78.9183 and 80.9163 amu. If the average atomic mass of bromine is 79.9091 amu, what is the natural abundance of the heavier isotope? percent abundance of 81Br __%

If 1.00 mol of argon is placed in a 0.500-L container at 20.0 ∘C, what is the difference between the ideal pressure (as predicted by the ideal gas law) and the real pressure (as predicted by the van der Waals equation) ? For argon, a=1.

Which of these is a covalent compound? 1. AICI3 2. CO 3. MgO 4. LiCI

What is a protein used for