07/25/17

How many liters of hydrogen will be produced when 4696 g of aluminum are combined with hydrobromic acid to make aluminum bromide?
Please give answer
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07/25/17

Stan poured 1/5 of a 2 liter bottle of soda into a thermos. How many milliliters of soda did Stan pour into the thermos
Math is hard and I need help with it for my summer math homework. I really suck at math sometimes and I always need help doing my math homework 
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07/24/17

Determine how many liters of nitrogen will be required to produce 100.7 liters of ammonia. balanced equation for this reaction is: 3H2(g) + N2(g) ==> 2NH3(g)
can you please answer.
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07/24/17

how do you prepare 125ml of 1.5 moles of CaCl2
how do you prepare 125ml of 1.5 moles of CaCl2
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07/21/17

Solve chemical reaction for temperature of exothermic reaction (thermite)
Hi there, I I have a question about Physics/ chemistry.If I have a bag of iron oxide(lll) and powdered aluminium in the ratio of 3:1 totalling 72g, with 54g being Fe2O3 and 18g of 2Al, what would... more
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07/21/17

There are 7 red balls, 5 green balls, and 8 yellow balls in a bag. One ball is randomly selected. Find the probability of picking a green ball.
7/10  1/4 1/5 5 or  3/4
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07/21/17

Which of the following expands in volume upon freezing?
The choices are.... a) Mercury b) Chloroform c) alcohol d) water
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07/21/17

Mia bought a special headset that sells for $10,000. If she got 15% off her purchase, how much did she pay?
well i need help with this answer because it is very hard to me because i dont know how to simplify.
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07/21/17

these 2 questions i need help with
A chemist makes nitroglycerine, C3H5(NO3)3, from glycerol, C3H5(OH)3, and nitric acid according to the following balanced equation:C3H5(OH)3 + 3HNO3 → C3H5(NO3)3 + 3H2O a) In one experiment, 4.1 g... more
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07/20/17

Why is the enthalpy of atomisation also the bond enthalpy?
My book says that the enthalpy of atomisation is the enthalpy change when one mole of its atoms in the gaseous state is formed from the element under standard conditions. eg. C(graphite)➙... more
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07/20/17

A student has a bottle labeled 0.750% albumin solution. The bottle contains exactly 5.00 mL. How much water must the student add to make the concentration of...
...of albumin become 0.125%? Please solve the equation step by step including any conversions you may have to do and the formula for this equation 
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07/20/17

If 3.18 g BaCl2 is dissolved in enough solvent to make 500.0 mL of solution, what is the molarity of this solution?
Please clearly include step by step how to solve the equation including any conversions you may have to do and the formula.
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07/20/17

The concentration of stomach acid, HCl, is approximately 0.10 M. What volume of stomach acid contains 0.25 mg of HCl?
Please include step by step how to answer this question including any conversions you may have to do and the formula.
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07/20/17

Chemistry; solutions
An experiment calls for 50 mL of a 0.5 M aqueous solution of sodium hydrogen carbonate. Describe how you would make up such a solution?
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07/19/17

an airplane flies at an average of 450 mph and uses 0.5 gal of fuel every second. determine the planes fuel efficiency, in miles per gallon,.
Could I have some help with this problem please??
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07/19/17

Distance question
A family is son a road trip from los angeles to San Fransisco. For the first 20 miles they averaged 40mph. For the next 300 miles, they averaged 75mph,. If they drive 80mph for the next hour, what... more
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07/18/17

What is the number of formula units in a 5.88 mol sample of Ca2O?
What is the number of formula units in a 5.88 mol sample of Ca2O?
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07/18/17

Ionization energy related doubt
can I know values for all the elements in Ionization enthalpy ?
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07/18/17

PLEASE ANSWER THIS QUESTION?
 IN BOHR ATOMIC MODEL WHICH SHELL HAS THE THE HIGHEST ENERGY AND WHY?
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07/18/17

Is ANOVA table a must for showing moderation effect, while using Hierarchical multiple regression?
I forgot to put AVOVA table in my thesis paper. Now I want to know, Is there any way to defend? I explained moderation effect by model summary table and coefficiency table.
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07/17/17

Chemistry; Gases
A sample containing 4.80 g of O2 gas has an initial volume of 15.5 L . What is the final volume, in liters, when each of the following changes occurs in the quantity of the gas at constant pressure... more
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07/17/17

What volume of 0.600 M HCl is required to neutralize 75.0 mL of 0.300 M KOH?
neutralization  
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07/17/17

joes new car averages 25 miles per gallon .how many gallons will he need to drive 455 miles
joes new car averager25 miles per gallon
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07/17/17

Pineapple juice
You have 6 liters of a pineapple juice blend that has 50% pure pineapple juice. How many liters of pure pineapple juice needs to be added to make a juice blend that is 75% pineapple juice?
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07/16/17

certain volume of ml of 25% alcohol is added to 200ml of 10% alcohol solution to obtain final solution of 15%
A certain volume of ml of 25% alcohol is added to 200ml of 10% alcohol solution to obtain a final solution of 15%. Find the amount of ml of 25% added (in ml) and therefore the total amount of 15%... more
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