02/01/18

chemistry help-molar mass
From the data in the table below, calculate the molar mass of the aluminum. Aluminum reacts with hydrochloric acid according to the balanced chemical equation below. 2AL (s) + 6HCl (aq) → 2AlCl3... more
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02/01/18

A solution is 15% salt by mass. It's density is 1.3 g/mL. How many liters of the solution would be needed I order to obtain 32 g of salt?
Show conversion factors used that lead to your answer. 
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02/01/18

How many grams (g) of NaCl do you need to make 95.9 mL of a 2.9 M NaCl solution?
How many grams (g) of NaCl do you need to make 95.9 mL of a 2.9 M NaCl solution? 
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01/31/18

Determine the molarity of a solution of concentrated nitric acid.
Determine the molarity of a solution of concentrated nitric acid. Concentrated nitric acid is 70% by mass HNO3. The density of concentrated nitric acid is 1.42 g/ml
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01/31/18

a car trvels 480km in 6 hours. How many km per hour does it travel
this i cant solve HELP PLEASE ive tried and tried but its really really really really really really hard                                                                          
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01/31/18

What is the mass in kilograms of the iceberg? The density of ice in the iceberg is 0.92 g/cm3
Given: An iceberg has a volume of 9325 ft3
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01/31/18

What is teh mass of the liquid in kg if the volume is 2.41 pints and the density is 7.28g/mL. Express the mass in kg
Last question
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01/31/18

If an object has a mass of 8.75 pounds and a volume of .358 liters, what is the density of the object?
Second part of my post lab questions. 
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01/31/18

A solid piece of gold has a mas of 1.15 kg and a volume of 3.8 deciliters. What is the density of the object?
 Part of my post labs questions and it driving me nuts trying to answer.
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01/31/18

Please help me ASAP, this is urgent
How many liters of hydrogen gas, measured at 0.940atm and 32 degree C, will result from decomposition of 10 grams of water through electrolysis (running electricity through it)?
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01/31/18

Please help me ASAP, this is urgent, please give detailed solution
Carbon monoxide gas reacts with oxygen gas to form carbon dioxide gas.a. What volume of oxygen will completely react with 3.5 L of carbon monoxide if the temperature and pressure were the same?b.... more
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01/31/18

Please help me ASAP, this is urgent
Mercury (ii) oxide decomposes to form mercury and oxygen gas. What volume of oxygen gas, measured at 150 degree C and 120.3 kPa, is produced by the decomposition of 7.8 grams of mercury(ii)oxide?
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01/30/18

Calculate the Partial pressure of each gas at STP, and calculate the density at STP.
At STP, air can be considered to be a mixture of ideal gases: 21.1% O<sub>2</sub>, 78.0% N<sub>2</sub> and 1.00% Ar by volume.   a) Calculate the partial pressure of each... more
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01/30/18

The density of brass is 8.89 g/cm^3. What is the density in kilograms per cubic meter?
Hi im Having trouble with my homework for physics I was wondering if you will be able to help
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01/30/18

Calculate the mol fraction
A 2.50L container at 17.0 °C contains a mixture of three gases, N2, He, and CO2, at partial pressure of 0.32 atm, 0.25 atm and 0.4 atm respectively.    a) calculate the total pressure of the gas... more
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01/30/18

The density of octane is 0.703g/male at 20°C . Calculate the volume in millimeters needed to have 350g of octane
Density mass and volume 
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01/30/18

I would like to know which branch or area of chemistry is appropriate/applicable for bath bomb?
I would like to know which branch or area of chemistry is appropriate/applicable for bath bomb? It is a combination of baking soda (sodium bicarbonate) and citric acid that is when dissolved in... more
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01/30/18

Is the density will affect to measure the mole of solid substance?
Is the density will effect to calculate the mole of solid substance  
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01/29/18

how many grams of sodium hydroxide are needed to prepare 235 ml of a 5.0% (m/v) solution?
need help. please axplain and describe the work needed to get to answer if possible.
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01/29/18

How many gm/mL of glucose and water are in 500mL of a 5.3% glucose solution?
This is a measurement lab for cell and molecular biology, however preparing concentrations by using w/v%, v/v, etc.
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01/29/18

Percent Deviation from Ideality
Using the Ideal Gas equation I calculated a temperature of 162K, and with the Van der Waals equation 177K. I need to find the percent deviation from ideality.   Is this correct?   177-162    x... more
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01/29/18

100mL cup of hot chocolate 95 degrees. I added 50 mL of milk, temperature of 5%degrees. What is the final temperature of the hot chocolate?
need the final temperature
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01/29/18

Mixture of 20L has 24% acid, how much water do you need to make 8% acid?
Mixture of 20L has 24% acid, how much water do you need to make 8% acid?
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01/29/18

Calculate the grams of nitrogen contained in a 5.00 gram sample of ammonium sulfate
Please answer my chemistry word problem. Basically, just do conversions for me. 
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01/29/18

if you have 2.34 moles of CF4, how many moles of fluorine do you have?
I need to know how to work the problem and the answer. thank you!
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