10/21/17

#### I am struggling with this problem about a magnesium reaction

Can you help me with this problem about a magnesium metal reaction?Magnesium metal is reacted with excess HI to produce hydrogen gas. The gas is collected over water. 45.82mL of the wet hydrogen... more

10/21/17

#### I am struggling with this problem on gas stochiometry

What volume in millilters of sulfur dioxide can be produced by the complete reaction of 3.82g of calcium sulfite with excess HCl(aq), when the final SO2 pressure is 827 torr at 44°C?

10/21/17

#### CALCULATING PARTITION COEFFICIENT - Organic Chemistry Lab

1. Calculate the partition coefficient of caffeine in water/methylene chloride from the following data: 10.3 g/100 mL for methylene chloride and 2.04 g/100 mL for water.   MY ANSWER:    K =... more

10/21/17

#### A 125g piece of metal is heated to 288C and then dropped Ony 88g of our water at 12C. The metal and water come to the same temperature of 24C.what is the specic

A 125g piece of metal is heated to 288C and then dropped Ony 88g of our water at 12C. The metal and water come to the same temperature of 24C.what is the specific heat (in j/g Celsius ) of the metal?

#### separation schemes flow chart

I'm trying to do a separation scheme that separates benzophenone, 3-methylaniline, and salicyclic acid but I have no clue what to use, please help

08/03/16

#### How many moles of glucose are in 1.0 liters of a 2.5 M solution of glucose in water

I need help determining the number of moles present in the glucose

10/24/15

#### Constant-pressure calorimeter, finding change in energy

In a constant-pressure calorimeter, 50.0 mL of 0.340 M Ba(OH)2 was added to 50.0 mL of 0.680 M HCl. The reaction caused the temperature of the solution to rise from 24.07 °C to 28.70 °C. If the... more

10/03/15

#### How many milligrams of NaOH are required to prepare 13.50dL of solution?

How many milligrams of NaOH are required to prepare 13.50dL of solution?   Then how would I use this answer to calculate the molarity?

09/29/15

#### The unbalanced equation for the reaction between methane and bromine is:

The unbalanced equation for the reaction between methane and bromine is:__CH4(g) +  __Br2(l) →  __CBr4(s) +  __HBr(g)Once this equation is balanced what is the value of the coefficient in front of... more

09/21/15

#### When 75mL of 12M hydrochloric acid hcl are diluted to a new volume of 250mL the new molar concentration becomes?

When 75mL of 12M hydrochloric acid hcl are diluted to a new volume of 250mL the new molar concentration becomes?

09/20/15

#### Hydrogen forms compounds with C,N,O, and F that have formulas CH4, NH3,H2O, and H. Predict the formulas hydrogen forms with P,Cl ,Si , and S.

Hydrogen forms compounds with C,N,O, and F that have formulas CH4, NH3,H2O, and H. Predict the formulas hydrogen forms with P,Cl ,Si , and S.

09/20/15

#### To which group in the periodic table does element M belong?

A certain element M is a main group metal that reacts with chlorine to give a compound with the chemical formula MCl2 and oxygen to give the compound MO. To which group in the periodic table does... more

09/08/15

#### What is the pH of a mixture of equal volumes of 0.1 M glycine and 0.05 M NaOH?

I can't figure out this question. This is the only information given.

09/07/15

#### 97.5 square inches convert to square centimeter. 1cm=0.39in

need help setting up formula

09/03/15

#### what is the solution’s concentration in g/L?

If a student dissolves 5.082 g of NiCl2 * 6H2O in water in a 250.0 ml flask, what is the solution’s concentration in g/L? (show all work)  convert mL to L ml to L divide by 1000... more

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