01/21/21

Chemistry need answers please

A certain reaction is first order. Determine the amount of time required for the reactant to go from 0.500 M to 0.250 M if the rate constant is 1200. s −1
Follows • 2
Expert Answers •1

01/21/21

Halogenalkanes and alcohols?
What type of intermolecular force is found in haloalknes and alcohols? And why does alcohols have a much higher boiling points than haloalkanes?
Follows • 2
Expert Answers •1

01/21/21

Steel has a specific heat of 0.466 J/g Celsius . How many Joules of heat are needed to raise the temperature of 30.0 grams of steel from 42.0 Celsius to 73.3 Celsius ?

Follows • 2
Expert Answers •2

01/21/21

predict the product(s) of water sent through an electrical current). Then balance the equation.

Follows • 2
Expert Answers •1

01/21/21

I'm having a hard time with chemistry salts
A voltaic cell is constructed using an aluminum electrode and a silver electrode.  (a) In the image below, fill in all text boxes to label the cathode, anode and to identify suitable salts for... more
Follows • 2
Expert Answers •1

01/21/21

I cant quite figure out these chemistry problems
Consider the following reaction.  Zn + NO3- → Zn2+ + NH3(a) Identify the oxidation number of each atom in the reaction above. Based on the oxidation numbers, explain how you know this is a redox... more
Follows • 2
Expert Answers •1

01/21/21

How many atoms are there in 0.56 mol of diazene
Follows • 2
Expert Answers •1

01/21/21

Electrochemistry problems

Use the cell notation below to answer the following question.  Al (s) │Al+3 (aq) ║ Sn+4 (aq) │ Sn+2 (aq)1. Write the half reactions that occur at each electrode and the overall reaction that occurs... more
Follows • 2
Expert Answers •1

01/21/21

Electrochemistry problems

Use the cell notation below to answer the following question.  Al (s) │Al+3 (aq) ║ Sn+4 (aq) │ Sn+2 (aq)1. Write the half reactions that occur at each electrode and the overall reaction that occurs... more
Follows • 2
Expert Answers •1

01/21/21

If 2.46 grams of FeO are reacted with 294.63 grams of Al, how many grams of Fe will be produced?
Al + FeO --> Al2O3 + Fe
Follows • 2
Expert Answers •1

01/21/21

Nitric acid, a major industrial and laboratory acid, is produced commercially by the multi-step Ostwald process, which begins with the oxidation of ammonia:
Step 1:  NH3(g) + O2(g)   NO(g) + H2O(l)Step 2: NO(g) + O2(g)  NO2(g)Step 3: NO2(g) + H2O(l)  HNO3(l) + NO(g)Assuming 100% yield in each step, what mass (in kg) of ammonia must be used to produce... more
Follows • 2
Expert Answers •1

01/21/21

How many grams of CO2 would be present in 125L of CO2 at STP? please show work
Follows • 2
Expert Answers •1

01/20/21

Unit 5 Quiz Review
What is the empirical formula for the over the counter pain reliever naproxen (Aleve)? It is 73.03% Carbon, 6.13% Hydrogen, and 20.84% Oxygen.  ________g... more
Follows • 2
Expert Answers •1

01/20/21

Unit 5 Quiz Review
A laboratory analysis of vanillin, the flavoring agent in vanilla, determined the mass percent composition: Carbon 63.15%, Hydrogen 5.30%, Oxygen 31.55%. Determine the empirical formula of... more
Follows • 2
Expert Answers •2

01/20/21

Unit 5 Quiz Review
The experimental mass of the sulfur compound was found to be 291.39 g. Using the empirical formula that you determined to calculate the molecular formula for the compound. Empirical formula molar... more
Follows • 2
Expert Answers •1

01/20/21

Calculate the density
A block of metal has a width of 3.2 , a length of 17.1 , and height of 4.7  . Its mass is 1.2  . Calculate the density of the metal.
Follows • 2
Expert Answers •1

01/20/21

PLEASE HELP ME OUT ASAP !

Calculate the pCl of the mixture of 100.0 mL of 0,0500 M NaCl with 40.0 mL 0.100 M AgNO3 . Take account of the precipitate occurs when the solutions are mixed. PLEASE WRITE THE SOLUTION WITH FULL... more
Follows • 2
Expert Answers •1

01/20/21

PLEASE HELP ME OUT ASAP !

Calculate the pH of the solution when 0.50 g of NaOH is added to 200.0 mL of 0.100 M HCOOH (formic acid). it will be accepted there is no change in the volume of solution when solid substance is... more
Follows • 2
Expert Answers •1

01/20/21

How many molecules of ethanol (C2H5OH) (the alcohol in alcoholic beverages) are present in 496 mL of ethanol? The density of ethanol is 0.789 g/cm3.
How many molecules of ethanol (C2H5OH) (the alcohol in alcoholic beverages) are present in 496 mL of ethanol? The density of ethanol is 0.789 g/cm3.
Follows • 2
Expert Answers •1

01/20/21

How many kilograms of chlorine are in 52 kg of the following chlorofluorocarbon (CFC)? C2F3Cl3
How many kilograms of chlorine are in 52 kg of the following chlorofluorocarbon (CFC)?C2F3Cl3
Follows • 2
Expert Answers •1

01/20/21

A hydrate of copper(II) chloride has the following formula (CuCl2 * x H2O):

A hydrate of copper(II) chloride has the following formula (CuCl2  x H2O):  The water in a 3.41-g sample of the hydrate was driven off by heating. The remaining sample had a mass of 2.69 g .Find... more
Follows • 2
Expert Answers •1

01/20/21

Consider a compound that is 40.00% C, 6.71% H, and 53.28% O by mass. Assume that we have a 100 g sample of this compound. What are the subscripts in the empirical formula for this compound?
Consider a compound that is 40.00% C, 6.71% H, and 53.28% O by mass. Assume that we have a 100 g sample of this compound. What are the subscripts in the empirical formula for this compound?
Follows • 2
Expert Answers •1

01/20/21

Stoichiometry Question
Consider the following reaction: 2 Co(s) + 3 H2O(g) → Co2O3(s) + 3 H2(g). What mass of coblat (III) oxide will be produced if 7 grams of cobalt reacts with 8 grams of water vapour?
Follows • 2
Expert Answers •1

01/20/21

chlorine makes a pool slightly basic. if the (H+) concentration of the pool is 8.1 x 10 to the power of -11. what is the pH of the pool?
Follows • 2
Expert Answers •1

01/20/21

what is the volume of water needed to make 10M solution of NaCl when using 50 grams of salt?
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.