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Miguel Benitez Velazquez

Miguel B.

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INSTANT ANSWER

b. NCl3 this soluble in water or hexane?

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INSTANT ANSWER

c. CO32- is this soluble in water or hexane?

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INSTANT ANSWER

oxidation numbers for c. Na2SO4 + Ba(NO3)2  2NaNO¬3 + BaSO4

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ANSWERED

Anna D. verified

Numerade educator

13. A titration experiment requires 27.2 mL of a 0.05 M NaOH solution to neutralize a 15.00 mL sample of HCl. Calculate the pH of the original HCl solution.

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ANSWERED

David Collins verified

Numerade educator

How many mL of a 0.321 M HNO3 solution would be needed to fully neutralize 25.0 mL of an NH4OH solution with a pOH of 1.23?

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ANSWERED

Nicole Smina verified

Numerade educator

11. A solution of K2Cr2O7 was prepared at room temperature by adding 78.7 g of solute to 300 mL of water. Is this solution saturated, supersaturated, or unsaturated? If supersaturated, what temperature would the solution need to be heated to for complete solubility to be achieved? If unsaturated, how much additional K2Cr2O7 can be added?

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ANSWERED

Jen H verified

Numerade educator

A sample contains 38.72% carbon, 9.62% hydrogen, and 51.60% oxygen and has a molar mass of 62.0 g/mol. a. Determine the empirical formula of this compound. b. Determine the molecular formula of this compound.

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ANSWERED

Nicole Smina verified

Numerade educator

The next few questions will all relate to the reaction of BaCl2 and AgNO3 to produce AgCl and Ba(NO3)2. a. Write and balance the chemical equation. b. Classify the type of reaction (single displacement, double displacement, combustion, synthesis, or decomposition) c. If 25.0 mL of 0.218 M BaCl2 and 30.0 mL of 1.3 M AgNO3 are reacted, what is the theoretical yield of AgCl? Change to concentrations d. If 1.22 g of AgCl are produced, what is the % yield? e. What is the final concentration of the Ba(NO3)2 that is also produced

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ANSWERED

David Collins verified

Numerade educator

Write a positively and negatively charged ion that would be isoelectronic with the atom in 7d. 7d. Si

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ANSWERED

David Collins verified

Numerade educator

What is the concentration of each ion present when 25.0 mL of 0.73 M LiPO4 is mixed with 30.0 mL of 0.62 M NaPO4.

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