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Question - Boron has only two naturally occurring isotopes. The mass of boron-10 is 10.01294 amu and the mass of boron-11 is 11.00931 amu. Calculate the relative abundances of the two isotopes.
State your answer by means of two significant figures.
Water is 11.2% hydrogen and 88.8% oxygen by weight. If 75.5 grams of hydrogen are produced by decomposing water, how many grams of water were decomposed and how many grams of oxygen were produced
A 500.0 g iron bar at 212 degrees C is placed in 2.0L of water at 24.0 degrees C. What will be the change in temperature of the water?
an aqueous solution contains 12.7 nacl by mass. what mass of water in gramsis contained in 2.5l of the vapor above this
The second time, 1.3mL is added to reach the end point. How would I calculate the molarity of the hydroxide ion (OH-) for the two tests
Question- Which radical, the hydroxyl isopropyl radical or the benzhydrol radical is more stable. Justify your answer.
which types of solutes tend to be insoluble in pure water but soluble in acid or in base
In the procedure, you extracted sodium chloride from the insoluble silicon dioxide and calcium carbonate by dissolving the sodium chloride in distilled water. However, calcium carbonate is actually slightly soluble in water
Draw an energy level diagram showing decay of these states to the ground state by listing them in the proper order of there energies and indicate which states are allowed transitions by using an arrow to show the decay of energy from one state to ..
This is concerning an organic chemistry lab. The lab is Synthesis as well as Analysis of Butenes. Explain why is there more than one component in the alkene mixture
A high jumper of mass 80.0 kg consumes a meal of 2.00 103 kcal prior to a jump. If 3.3% of the energy from the food could be converted to gravitational potential energy in a single jump, how high could the athlete jump
Suppose a sample of helium gas has a volume of 4.54L at 230.3K and 1.644 atm. Explain how many helium molecules does it contain
Student worked on a problem and the response indicated that NCl3 was a polar covalent bond. Explain how can that be when N and Cl both have electronegativity levels at 3.0
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