General Chemistry Answers

Crude oil has sold at $21.75 a barrel. A barrel has a volume of 42 gallons.

What is the price of crude oil in ¢ /cup? (One gallon = 4 quarts; 4 cups = 1

quart)( ¢ =cents)

Group of answer choices

What type of decay occurs with the transformation of Th-234 to Ra-210?

4. Write the balanced nuclear equations for the following

a) Formation of Mn-52 by positron emission

b) Formation of Ac-228 by beta emission

c) Formation of Np-232 by alpha decay

d) Mercury-201 undergoes electron capture

e) Thorium-231 decays to form protactinium

For one mole in NH₃ in the following reaction, how many electrons are lost or gained. NH3 + O₂ = NO +H₂O

When 1 mol of caffeine (C8H10N4O2) was burned in air, 4960 kJ of heat is evolved. Five grams of caffeine is burned in a bomb calorimeter. The temperature is observed to increase by 11.37C. What is the heat capacity of the calorimeter?

True or False: Blood collected from a site with hematoma from a patient with dengue is more likely to be hemolyzed once checked after centrifugation.

A) What mass of H2C2O4 is present in a 25cm3 sample if it is titrated to its equivalence point with 18.09 mL of 0.2235 M NaOH? The balanced chemical reaction is as follows: H2C2O4+2NaOH→Na2C2O4+2H2O.

B) What is the mass concentration of H2C2O4 in the sample?

Why wasn’t the neutron discovered during rutherford and Thomson experiments