02/07/19

A snail can crawl 2/5 of a meter in a minute. How many minutes will it take the snail to crawl 6 meters? Enter your answer in the box.
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02/07/19

Help Molar / Mass Problem
A mass of 45 grams of Aluminum are used up by the reaction, how many moles of Aluminum Chloride will be produced
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02/07/19

sarah runs 1 hour each day, which burns .11 calories a minute per pound of body weight, how many calories will she burn in one week?
sarah runs 1 hour each day,Running burns .11 calories per min of body weight. Nancy swims 2 hours a day and that burns .05c per min of body weight. I need a formula.. it is actually which girl... more
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02/07/19

A student reacts 100g of carbon in the lab and gets a 75% yield of carbon monoxide. What is the actual yield in grams?
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02/06/19

chemistry %yield

Magnesium is obtained from sea water. Ca(OH)2 is added to sea water to precipitate Mg(OH)2. The precipitate is filtered and reacted with HCl to produce MgCl2. The MgCl2 is electrolyzed to produce... more
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02/06/19

What decimal is Equivalent to 50/100
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02/06/19

what type of biomolecule does the process of transcription result in?
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02/06/19

A metal worker had a metal alloy that is 25% copper and another alloy that is 70% copper. How many kilograms of each alloy should the metalworker combine to create 100kg of a 52% copper alloy ?
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02/06/19

Toyland is having a sale. All items are 20% off. How much will you save on an item that usually sells for $95?
Iam 6 gade (And new to this)
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02/06/19

You have a unknown tuning fork it hits its first resonance at 31 cm what is it frequency

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02/06/19

Kim is 3 times the age of her younger sister, Jasmine. If Jasmine will be 6 years old in two years, how old will Kim be?
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02/06/19

Write the following equations out in words. Fe2S3 + HCl → FeCl3 + H2S
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02/06/19

5 times the sum of p and 5
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02/06/19

Chemistry balancing equations
Ammonia (NH3) is widely used as a fertilizer and in many household cleaners. How much ammonia is produced when 7.71 mol of hydrogen gas react with an excess of nitrogen gas? Answer in units of mol.
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02/05/19

why H2O2 decomposes to H2O and O2 when we put it in a cup with dish soap?

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02/05/19

1. Why does H2O2 and dish soap react ? 2. Why does potassium iodide consider as a catalyst for this reaction ?
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02/05/19

the negative ions in two compounds switch places in a double replacement reaction
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02/05/19

A gas occupies 3.39 L when the temperature is 45.0°C and at 1.00 atm of pressure. What temperature change (in K) will be needed to change the volume to 6.35 L at constant pressure?

A gas occupies 3.39 L when the temperature is 45.0°C and at 1.00 atm of pressure. What temperature change (in K) will be needed to change the volume to 6.35 L at constant pressure? 
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02/05/19

A gas at constant temperature occupies a volume of 3.49 L and exerts a pressure of 830. torr. What volume (in L) will the gas occupy at a pressure of 588 torr?

A gas at constant temperature occupies a volume of 3.49 L and exerts a pressure of 830. torr. What volume (in L) will the gas occupy at a pressure of 588 torr? 
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02/05/19

If 86 J of heat are added to a pure gold coin with a mass of 17 g , what is its temperature change? Specific heat capacity of gold is 0.128 J/g∘C.
If 86 J of heat are added to a pure gold coin with a mass of 17 g , what is its temperature change? Specific heat capacity of gold is 0.128 J/g∘C.
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02/05/19

Limiting reagents help

Solutions of sodium carbonate and silver nitrate react to form solid silver carbonate and a solution of sodium nitrate. A solution containing 7.75 g of sodium carbonate is mixed with one... more
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02/05/19

Should I use a bar graph or a line graph?
For my Bio Lab I am asked to create a graph. I’m not sure which would be the best choice, this is the prompt:Researchers were studying the reproductive rate of the water flea, Daphnia. They counted... more
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02/05/19

I have to be within 10% (either above or below) 200.59 g. How do I determine how much I can be off?
I'm weighing a project for chemistry (my element is mercury) and I'm currently at 203 g. Is this acceptable within 10% of the 200.59 mass of the element?
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02/04/19

What is the boiling point of a 0.321m aqueous solution of NaCl? (Report answer to three decimal points)
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02/04/19

What is the best graph to use?
For my Bio Lab I am asked to create a graph. I’m not sure which would be the best choice, this is the prompt:Researchers were studying the reproductive rate of the water flea, Daphnia. They counted... more
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