06/28/17

How many liters of water must be added to 30 liters of a 10% brine solution to dilute it to an 8% solution?
The answer is 7.5 liters, but I don't know how they got it. The formula for these types of problems is rb = a, where r is the rate, b is the base, and a is the amount. 
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06/27/17

The dosage of a medication is 5mg/kg. How many mg would be needed for a 10lb cat? If the medication concentration is 2mg/ml, how many ml would be given?
this question is for unit conversions in introductor chemistry 
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06/26/17

find more tutor reviews
I'm looking for an SAT prep tutor for my daughter. I only see limited reviews for tutors. How do I see all the reviews that are posted?
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06/24/17

Compare and contrast 1-butene and 2-butene.
Chemistry Question
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06/24/17

What is the rule for numbering substituents on the ring?
Chemistry Question
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06/24/17

How is numbering affected if there is more than one type of substituent group?
Chemistry Question
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06/24/17

How many liters of a 30% alcohol solution must be mixed with 90 liters of a 60% solution to get a 40% solution
How many liters of a 30% alcohol solution must be mixed with 90 liters of a 60% solution to get a 40% solution
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06/23/17

What are the standard conditions for a zinc half-cell?
Chemistry Question
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06/23/17

What is the chemical composition of a hydrogen electrode?
Chemistry Question
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06/23/17

In each of the following reactions, state whether C is oxidized or reduced.
1. CH3CH2CH2CH3 → CH3CH=CHCH3   2. CH3CH=CH2 → CH3CH2CH3
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06/23/17

After a 20 % % reduction, you purchase a new computer monitor for $216.00. What was the price of the computer monitor before the reduction?
After a 20%% reduction, you purchase a new computer monitor for $216.00. What was the price of the computer monitor before the reduction?
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06/23/17

Find the perimeter of rectangle 28ft by 16ft.
Find the perimeter of rectangle that's 28ftwide... n 16feet length
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06/23/17

A sample of hydrogen (H2) gas is collected over water at 35C and 745mm. the volume of the gas collected is 72.0ml. How many moles of H2 gas have been collected?
A sample of hydrogen (H2) gas is collected over water at 35C and 745mm. the volume of the gas collected is 72.0ml. How many moles of H2 gas have been collected?
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06/22/17

Given: 2H2(g)+O2(g) -> 2H2O(g) Solve: How many liters of H2O would form if 10.5 liters of oxygen gas reacted at STP?
Given: 2H2(g)+O2(g) -> 2H2O(g) Solve: How many liters of H2O would form if 10.5 liters of oxygen gas reacted at STP?
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06/22/17

starting with 15 mg iron what is the theoretical mass of iron (III) chloride produced
starting with 15 mg iron what is the theoretical mass of iron (III) chloride produced
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06/22/17

This type of bonding occurs between two nonmetal atoms.
help me please
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06/22/17

Explain the type of chemical reaction that is involved in a electrochemical reaction.
Chemistry Question
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06/22/17

What needs to be able to move in an electrochemical reaction? Explain.
Chemistry Question
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06/22/17

Chemistry Conversion
A mouthwash is 21.6% ethyl alcohol by mass. If each bottle contains 0.358 pt of mouthwash with a density of 0.876 g/mL, how many kilograms of ethyl alcohol are in 164 bottles of the... more
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06/22/17

What is the dose for a 170-lb patient?
An intramuscular medication is given at 5.00 mg/kg of body weight. Express using 2 significant figures using conversion factors.
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06/22/17

In the reaction below, what is oxidized and what is reduced?
Cr2O3(s) +2Al(s) → 2Cr(s) +Al2O3(s)
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06/21/17

Do all Lewis acid-base reactions involve protons?
Chemistry Question
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06/21/17

What is the difference between a Lewis acid or base and a Brønsted Lowry acid or base?
Chemistry Question
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06/21/17

How many grams are in 3 moles of NaCl
How many grams are in 3 moles of NaCl
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06/21/17

I need help with a highschool chemistry question... Use the following reaction to solve the conversion problem 2 P2O4 = P4 + 5 O2
a) how many grams of P4 could I produce from 71 grams of P2O5?b) how many Liters of Oxygen gas could I produce from 213 grams of P2O5?c) how many grams of P2O5 are required to produce 62 grams of P4?
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