11/14/17

chemistry prelab question
Potassium permanganate (KMnO4) is the oxidizing agent and sodium oxalate (Na2C2O4) is the reducing agent.a. Manganese (Mn) is reduced.b. Carbon (C) is oxidized.   2KMnO4(aq) + 5Na2C2O4(aq) +... more
Follows • 3
Expert Answers •2

11/14/17

Orbital of chlorine
What is the complete orbital for chlorine? What is the difference between an orbital and electron configuration?
Follows • 2
Expert Answers •1

11/14/17

Mass connects which two things?
Balance a chemical equation.Recognize that the number of atoms of each element is conserved in a chemical reaction.Describe the difference between coefficients and subscripts in a chemical... more
Follows • 2
Expert Answers •1

11/14/17

which is less reactive ethane or benzene ?
And which is more stable also 
Follows • 2
Expert Answers •1

11/13/17

Calculate the mass percent composition of each element in each compound.
FeCl3   Mass % of Fe, Cl   Express your answer using four significant figures
Follows • 2
Expert Answers •1

11/13/17

CALCULATE THE CONCENTRATION OF A SAMPLE OF BOVINE SERUM ALBUMIN
Calculate the concentration of a sample of bovine serum albumin (Mr 67,000) with an absorbance at 280 nm of 0.5, giving your answer in units of M (Molarity) (NOTE: ε at 280 nm = 1 cm3 mg-1 cm-1 and... more
Follows • 2
Expert Answers •1

11/13/17

CALCULATE PROTEIN CONCENTRATION
Calculate the protein concentration for a sample with an absorbance at 280 nm of 0.5, giving your answer in units of mg protein/ml (NOTE: ε at 280 nm = 1 cm3 mg-1 cm-1 and a cuvette of 1cm path... more
Follows • 2
Expert Answers •1

11/13/17

Epsom salts are magnesium sulphate heptahydrate. Suppose the lid was left off a 5oog container for several months and all the water evaporated from the hydrate.
Calculate the new mass of the anhydrous salt that is left behind in the container 
Follows • 2
Expert Answers •1

11/13/17

Determine the amount of potassium chloride in each solution.
40 mg of a solution containing 14 % KCl by mass 24.2 kg of a solution containing 20.7 % KCl by mass Express your answer using three significant figures.
Follows • 2
Expert Answers •1

11/13/17

Enthalpy of formation or lattice energy for halides of alkali metals
Why there is an increase in order of m.p.& b.p. in NaF>NaCl>NaBr>NaI
Follows • 2
Expert Answers •1

11/13/17

Sam mixed 13 Oz of soil containing 10% clay with 6 Oz of soil with 8% clay. What is the clay content in the mixture?
Sam mixed 13 Oz of soil containing 10% clay with 6 Oz of soil with 8% clay. What is the clay content in the mixture?
Follows • 2
Expert Answers •1

11/12/17

how many moles of oxygen are in 6.23 moles of Cr(C2H3O2)3?
please show your work so i can understand. 
Follows • 3
Expert Answers •1

11/12/17

Can you plz help me with the question below. Big test due tomorrow and it’s killing me
A. How many mole of CO2 can be produced when 2.25 moles of C3H8 reacts?B. Calculate how many moles of oxygen must react with propane to produce .756 moles of water. Balance the equation... more
Follows • 3
Expert Answers •1

11/12/17

Question below
A. How many mole of CO2 can be produced when 2.25 moles of C3H8 reacts? B. Calculate how many moles of oxygen must react with propane to produce .756 moles of water. Balance the equation... more
Follows • 2
Expert Answers •1

11/12/17

What type of reaction is shown below. Name all compounds in each reaction...
A. SO3(g)+H2O(I)—>H2SO4(aq)   B. CuSO4 x5H2O—> CuSO4+5H2O   possible reactions are decomposition, combination, replacement, double replacement, and oxidation reduction. 
Follows • 2
Expert Answers •1

11/12/17

which of the following data correctly shows the conservation of mass for the reaction below? Name the reactant and product and type of reaction. Balance the rea
which of the following data correctly shows the conservation of mass for the reaction below? Also, name the reactant and product and type of reaction. Balance the... more
Follows • 2
Expert Answers •1

11/12/17

In the chemical reactions of iron and sulfur, A. How many miles of sulfur are needed to react with 1.42 moles of iron? B. How many moles of iron ...continue bel
In the chemical reactions of iron and sulfur,A. How many miles of sulfur are needed to react with 1.42 moles of iron?B. How many moles of iron are needed to react with 2.75 moles of sulfur?Name the... more
Follows • 2
Expert Answers •1

11/12/17

Is The rate of reaction is zero at 0 degrees?
I need to know whether the following questions is a yes or no
Follows • 2
Expert Answers •1

11/12/17

How much time does Neha take to cover 500 m if she walks 2.5 km per hour
Distance speed time
Follows • 2
Expert Answers •1

11/12/17

WITH REFERENCE TO 'p' ORBITALS, EXPLAIN 'HUND'S RULE'
i want explaination for it for fybsc
Follows • 2
Expert Answers •1

11/11/17

lindane has a mass of 24.78% C, 2.08% H, and 73.14% Cl. Determine the empirical formula and molecular formula. The compound molar mass is 290.0 g
The insecticide lindane has a mass percent compostion of 24.78% C, 2.08% H, and 73.14% Cl. Determine the empirical formula and molecular formula. The compound molar mass is 290.0 g
Follows • 2
Expert Answers •1

11/11/17

One tablet of an antacid contains 680.0 mg of CaCO3. How many moles and how many particles of CaCO3 are present in the antacid?
One tablet of an antacid contains 680.0 mg of CaCO3. How many moles and how many particles of CaCO3 are present in the antacid?
Follows • 3
Expert Answers •2

11/11/17

help please show me how to slove
For this question, use the metric units of are and hectare. The are (pronounced as“air”) is the unit for measuring the area of house lots, gardens, and other medium‐size regions. The are is equal... more
Follows • 2
Expert Answers •1

11/11/17

how many grams of sucrose are needed to make 675 mL of a 37.0% (w/v) sucrose solution?
 answer must be in g sucrose
Follows • 2
Expert Answers •2

11/11/17

Percent Copper in Cu2(NO3)(OH)3
Trying to find the percent copper in many different variations of Copper Hydroxyl Nitrate 
Follows • 2
Expert Answers •1

Still looking for help? Get the right answer, fast.

Ask a question for free

Get a free answer to a quick problem.
Most questions answered within 4 hours.

OR

Find an Online Tutor Now

Choose an expert and meet online. No packages or subscriptions, pay only for the time you need.