02/25/19

how is the charge for transition elements determined if given the formula of an ionic compound
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02/25/19

How do I find the formula for lead (IV) sulfate?

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02/25/19

How do you find the formula for titanium (IV) oxide?
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02/25/19

The product of a number and 10 is 30. Find the number.
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02/25/19

Select the true statement below regarding the following balanced reaction: MnO4-(aq) + NO(g) --> MnO2(s) + NO3-(aq)

Select the true statement below regarding the following balanced reaction: MnO4-(aq) + NO(g) --> MnO2(s) + NO3-(aq) 1) since a solid is formed, this is a redox reaction and a precipitation... more
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02/25/19

Suppose a reaction A + B --> C occurs at some initial rate at 25°C. Which response includes all of the changes below that could increase the rate of this reaction?

Suppose a reaction A + B --> C occurs at some initial rate at 25°C. Which response includes all of the changes below that could increase the rate of this reaction? I. lowering the temperatureII.... more
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02/25/19

What volume of 0.345 M HCl is required to neutralize 50.0 mL of 0.800 M NaOH?
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02/25/19

Which of the following reactions would be expected to not only transfer thermal energy (heat) to the surroundings, but would also perform pressure-volume work on the surroundings?
Which of the following reactions would be expected to not only transfer thermal energy (heat) to the surroundings, but would also perform pressure-volume work on the surroundings?1) CO2(g) +... more
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02/25/19

referring to the reaction where ethane in the presence of oxygen if you start with 15 g of ethane how many grams of water will you make
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02/25/19

what is the percentage of salt in AgNO3 times 2H2O?
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02/25/19

2Na + MgCl2 -> 2NaCl + Mg The problem is to find how many grams of sodium chloride is formed from 12.5g of sodium.
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02/24/19

why is the conservation of energy considered a scientific law?
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02/24/19

Calculate the percent by mass.
Calculate the percent by mass of zinc in the post-1982 pennies using the following information: the total mass of each penny is 2.500 g, the density of copper is 8.96g/mL, the density of zinc is... more
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02/24/19

Formula for Ionic Compounds

Magnesium bromide = Ammonium hydroxide = Copper (II) sulfite =
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02/24/19

When obtaining a chemical from a reagent bottle, a student accidentally takes too much.

What should be done with the excess?
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02/24/19

Chemistry: Solving limiting reactant problems in solution
Suppose 0.206g of iron(II) bromide is dissolved in 100.mL of a 11.0mM aqueous solution of silver nitrate. Calculate the final molarity of bromide anion in the solution. You can assume the volume of... more
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02/23/19

One mole of each of the following compounds is added to water in seperate flanks to make 1.0L of solution. Which solution has the largest total ion concentration?
CaCO3 Al(NO3)3 Ba(OH)2 AgCl BaCl
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02/23/19

Estimate the reaction enthalpy for the balanced reaction CH_3CH_2OH + 3O_2 --> 2CO_2 + 3H_2O
Estimate the reaction enthalpy for the balanced reactionIf 2.10 g of ethanol reacts with 10.93 g of oxygen, what is the experimentally observed heat change?
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02/23/19

Beginning Algebra

Triple the difference of a number and 5 is the same as six less than double the same number. Find the number.
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02/23/19

There are 3 oil tanks containing 51 litres, 136 litres and 289 litres respectively.
There are 3 oil tanks containing 51 litres, 136 litres and 289 litres respectively. What is the maximum capacity of the container that can be used to completely empty the oil in the ranks in exact... more
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02/23/19

thermodynamics gas laws
1dm^3 of air at 20oC is heated at a constant pressure of 300 kPA until the volume is doubled calculate:-final temperature -the mass
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02/23/19

Formula and Molecular Mass
How many µL of 5.00% acetic acid by mass would you need to provide 3.41 x 1020 C atoms? (Assume the density of the solution is 1.011g/mL)
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02/23/19

formula and molecular mass
how many grams of MgCl2 would you need to obtain 5.0 x 1023 Cl- ions?
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02/23/19

Write the formula for the following transition metal ionic compounds:

Copper (I) oxide: Why is it Cu2O? How do I get that? Nickle (II) sulfide: Why is it NiS? How do I get that? Silver (I) chloride: Why is it AgCl? How do I get that?
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02/23/19

Transition metal ionic compound questions

SnF2: Why is it tin (II) fluoride? How do I get that?MnO2: Why is it manganese (IV) oxide? How do I get that?SnCl4: Why is it tin (IV) chloride? How do I get that?
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