08/13/20

the number of girl’s in the band is 6 more than twice the number of boys. there are 88 girls in the band. how many boys are there?

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08/01/20

money word problem
sugar addict #1 paid $40.25 for 4 bags of chocolate kisses and 5 packages of gummi bears. Sugar addict #2 paid $21 for 3 bags of chocolate kisses and 2 packages of gummi bears.a] how much did each... more
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07/30/20

How many MOLES of disulfur decafluoride are present in 7.19×1022 molecules of this compound ?
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07/30/20

How many MOLECULES of disulfur decafluoride are present in 1.58 moles of this compound ?
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07/30/20

organic chemistry
please help!!!drawing a reaction equation (use the structural formulae for the compounds and products) 1. benzoic acid + diethyl ester reaction2. 2-naphthol + diethyl ester reaction3. Sodium... more
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07/30/20

How many GRAMS of chlorine are present in 4.22×1022 molecules of phosphorus pentachloride ?
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07/30/20

How many ATOMS of phosphorus are present in 2.48 grams of phosphorus pentachloride
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07/28/20

How long would the smaller one​ take, working​ alone, to fill the​ tank?
Two pipes are connected to the same tank. When working​ together, they can fill the tank in 8 hrs. The larger​ pipe, working​ alone, can fill the tank in 12 hrs less time than the smaller one. How... more
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07/28/20

Find the​ bicyclist's average speed on each part of the trip.
During the first part of a​ trip, a bicyclist travels 51 miles at a certain speed. The return trip is made at a speed that is 6 mph slower. Total time for the round trip is 15 hr. Find the​... more
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07/28/20

What was the speed on each part of the​ trip?
During the first part of a​ trip, a canoeist travels 26 miles at a certain speed. The canoeist travels 8 miles on the second part of the trip at a speed 5 mph slower. The total time for the trip is... more
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07/25/20

Write the balanced net ionic equation for the precipitation of magnesium hydroxide from aqueous solution:
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07/25/20

Write the balanced net ionic equation for the precipitation of iron(III) phosphate from aqueous solution:
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07/25/20

A 0.312 mol sample of an unknown gas contained in a 8.00 L flask is found to have a density of 1.78 g/L. The molecular weight of the unknown gas is ?? g/mol.
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07/24/20

What percentage of the students missed the field trip because they had the flu?
Six students from a class of 37 and 7 students from a class of 34 missed a field trip because they were sick with the flu. Another 3 students missed the trip because they were late for the bus.... more
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07/24/20

Pete has just made a batch of Rice Krispies marshmallow treat.
1. Pete has just made a batch of Rice Krispies marshmallow treat. The baking pan measure 13 inches by 9 inches. He has decided that each treat will be 1 1/2 𝑖𝑛𝑐ℎ 𝑏𝑦 1 𝑖𝑛𝑐ℎ.a. First, estimate how... more
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07/23/20

You want the volume of the box to be 2 cubic inches
What are the possible side lengths of the box? How many solutions did the equation have? Were all the solutions a possible side length of the box? Explain.
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07/23/20

Write the balanced net ionic equation for the precipitation of aluminum sulfide from aqueous solution:
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07/23/20

When aqueous solutions of sodium carbonate and cobalt(II) sulfate are combined, solid cobalt(II) carbonate and a solution of sodium sulfate are formed. The net ionic equation for this reaction is:
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07/23/20

Write the balanced net ionic equation for the precipitation of zinc carbonate from aqueous solution:
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07/21/20

How many milliliters of an aqueous solution of 0.147 M copper(II) bromide is needed to obtain 13.9 grams of the salt?
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07/21/20

question written below
An aqueous solution of hydrobromic acid is standardized by titration with a 0.119 M solution of barium hydroxide. If 24.1 mL of base are required to neutralize 26.8 mL of the acid, what is the... more
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07/21/20

In the laboratory you dilute 5.09 mL of a concentrated 12.0 M perchloric acid solution to a total volume of 150 mL. What is the concentration of the dilute solution?
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07/20/20

Please answer quickly
In my bag 1/3 of the quarters is the same as 2/5 of the dimes. I have 8 more quarters than dimes. How many coins do i have
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07/20/20

If 128 grams of calcium carbide, CaC2, is combined with 108 g of water, is there a limiting reagent? If so which reagent is the limiting reagent?
Calcium carbide (CaC2) reacts with water to produce acetylene (C2H2):CaC2 (s) + 2H2O (g) produces Ca (OH)2 (s) +C2H2 (g)If 128 grams of calcium carbide, CaC2, is combined with 108 g of water, is... more
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07/20/20

Please Answer quickly
A sum of money was shared between Chloe and Kenton.2/5 of the money Chloe got is the same as 1/2 of the money Kenton got. If chloe has $25 more than Kenton. How much money do the two of them have... more
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