03/15/21

How do I convert mmol/g to μmol/L?
Hello,How do I convert mmol/g to μmol/L?Specifically, 282±374.77 (Mean±SD) mmol/g to μmol/L?and 65±56.57 (Mean±SD) mmol/g to μmol/L?Many ThanksA.M.
Follows • 1
Expert Answers •1

03/15/21

Predict how many grams of CaCl2 can be produced from 15.00 grams of KCl
Using this balanced equation: CaCO3 + 2KCl → CaCl2 + K2CO3 Predict how many grams of CaCl2 can be produced from 15.00 grams of KCl
Follows • 2
Expert Answers •1

03/15/21

Calorimeter question
A mixture of ammonia, NH3(g), and methane, CH4(g), is burned in an excess of oxygen in a bomb calorimeter. The heat released during this combustion reaction is 1377.65 kJ. If the calorimeter has a... more
Follows • 2
Expert Answers •1

03/15/21

For the reaction below, Kc = 9.2 × 10⁻⁵. What is the equilibrium concentration of D if the reaction begins with 0.72 M A? A (aq) + 2 B (s) ⇌ C (s) + 2 D (aq)
Follows • 2
Expert Answers •1

03/14/21

How many grams of Al are required to produce 17.5 g of hydrogen
Follows • 2
Expert Answers •1

03/14/21

When 40 mL of 0.20 M CH3COOH is mixed with 40 mL of 0.20 M CH3COOK, what type of solution is the resulting mixture?
Follows • 2
Expert Answers •1

03/14/21

Suppose a buffer solution is made of formic acid (HCHO2) and sodium formate (NaCHO2). What is the net ionic equation for the reaction that occurs when a small amount of HCl is added to the buffer?
Suppose a buffer solution is made of formic acid (HCHO2) and sodium formate (NaCHO2). What is the net ionic equation for the reaction that occurs when a small amount of HCl is added to the... more
Follows • 2
Expert Answers •1

03/14/21

How many moles of precipitate will be formed when 140.0 mL of 0.250 M LiCl is reacted with excess Pb(NO₃)₂ in the following chemical reaction? 2 LiCl(aq) + Pb(NO₃)₂(aq) → PbCl₂(s) + 2 LiNO₃(aq)
Follows • 2
Expert Answers •1

03/14/21

What is the pH of 100.00 mL solution that contains 10.00 mmol of formic acid and 20.00 mmol of sodium formate.

Follows • 2
Expert Answers •1

03/14/21

What is the pH of a 0.10 M solution of C5H5NHCl

Follows • 2
Expert Answers •1

03/14/21

Chemistry Equilibrium

At a certain temperature, 0.4011 mol of N, and 1.681 mol of H, are placed in a 5.00 L containerN2(g) +3 H2 (g) = 2 NH, (g)At equilibrium, 0.1401 mol of N2, is present. Calculate the equilibrium... more
Follows • 2
Expert Answers •1

03/14/21

Consider the titration of a 60.0 mL of 0.365 M weak acid HA (Ka = 4.2 x 10⁻⁶) with 0.400 M KOH.
After 75.0 mL of KOH have been added, what would the pH of the solution be?
Follows • 2
Expert Answers •1

03/14/21

Consider the titration of 50.0 mL of 0.315 M weak base B (Kb = 7.5 x 10⁻⁶) with 0.340 M HNO₃.
What is the pH of the solution after the addition of 90.0 mL of HNO₃?
Follows • 2
Expert Answers •1

03/14/21

Assuming an efficiency of 47.30%, calculate the actual yield of magnesium nitrate formed from 119.6 g of magnesium and excess copper(II) nitrate. Mg+Cu(NO3)2⟶Mg(NO3)2+Cu
Assuming an efficiency of  calculate the actual yield of magnesium nitrate formed from  of magnesium and excess copper(II) nitrate.
Follows • 2
Expert Answers •1

03/13/21

SOS! Please help with rate law problem!
Step 1 : A + B → C + E (slow) Step 2 : B + E → D (fast)Predict the rate law if step 1 is slow.
Follows • 2
Expert Answers •1

03/13/21

How can I use standard entropies and heats of formation to calculate ΔGƒ° at a certain temperature (°C)?
Use standard entropies and heats of formation to calculate ΔGƒ° at 25°C for the following compounds:a) ammonium nitrate (s)b) chloroform, CHCl3(l)c) potassium chloride (s)
Follows • 2
Expert Answers •1

03/13/21

The maximum amount of lead sulfate that will dissolve in a 0.147 M lead acetate solution is ?
Follows • 1
Expert Answers •1

03/13/21

Can there be more than one first order reaction?
Can there be more than one first order reaction?
Follows • 2
Expert Answers •1

03/13/21

The rate constant for a certain reaction has the units concentration time^-1. What is the order of the reaction?
The rate constant for a certain reaction has the units concentration time^-1. What is the order of the reaction?
Follows • 2
Expert Answers •2

03/13/21

For the reaction below, Kc = 4.60 × 10⁻⁶. What is the equilibrium concentration of B if the reaction begins with 0.250 M A? A (g) ⇌ 3 B (g)
Follows • 2
Expert Answers •1

03/13/21

An x-ray has a wavelength of 4.40 Å. Calculate the energy (in J) of one photon of this radiation. Enter your answer in scientific notation.
Follows • 2
Expert Answers •1

03/13/21

If 40.0 grams of catalyst are used to speed up a reaction involving 30.0 g of reactant, how many grams of catalyst should be left when the reaction is complete?
If 40.0 grams of catalyst are used to speed up a reaction involving 30.0 g of reactant, how many gramsof catalyst should be left when the reaction is complete?
Follows • 2
Expert Answers •1

03/13/21

A 7.68 g sample of a compound contains 2.45 g of potassium, K, 2.22 g of chlorine, Cl, and oxygen, O. Calculate the empirical formula. Insert subscripts as needed.

Follows • 2
Expert Answers •1

03/13/21

Preparation of buffer
Calculate the volumes of 1M sodium acetate, 1M acetic acid and water to prepare 100mL of a pH 4 buffer assuming that the final concentration of acetic acid in the buffer is 0.25M. Ka = 1.8 x 10^-4
Follows • 2
Expert Answers •1

03/13/21

Ka from pH of a solution
The pH for 0.0715 M solution of CCl₃CO₂H is 1.40. Using a RICE table and the definition of Ka, determine the value of Ka for CCl₃CO₂H.
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.