02/01/21

A bag of potato chips is sealed in a factory near sea level.

The atmospheric pressure at the factory is 761.3 mm Hg. The pressure inside the bag is the same. What is the pressure inside the bag of potato chips in Pa? (Answer: 1.01 x 105 Pa). How is the... more
Follows • 2
Expert Answers •1

02/01/21

PLEASE HELP ASAP!

calculate the PH of the solution when 0.5 g of NaOH is added to 200 ml of 0.1 M HCOOH(formic acid). It will be accepted that there is no change in the volume of solution when solid substance is... more
Follows • 2
Expert Answers •1

01/31/21

Calculate the mass in milligrams of 3.16 × 10 ^ 20 formula units of Bi(NO3)3 · 5H2O. Enter your answer in scientific notation.
Follows • 2
Expert Answers •1

01/31/21

If one mole of a substance has a mass of 32.0 g, how many moles are in 0.45 kg of the substance? Express your answer in moles using the correct number of significant figures.
If one mole of a substance has a mass of 32.0 g, how many moles are in 0.45 kg of the substance? Express your answer in moles using the correct number of significant figures. Do not enter your... more
Follows • 2
Expert Answers •1

01/31/21

Calculate the volume of 12 mg of a substance whose density is 2.92 g/mL. Express your answer in milliliters using the correct number of significant figures.
Calculate the volume of 12 mg of a substance whose density is 2.92 g/mL. Express your answer in milliliters using the correct number of significant figures. Do not enter your answer using... more
Follows • 2
Expert Answers •1

01/31/21

What is the overall reaction order for the following rate law: Rate = k[A][B][C]²
What is the overall reaction order for the following rate law: Rate = k[A][B][C]²
Follows • 2
Expert Answers •1

01/31/21

The reaction A + 2 B → C has the rate law rate = k[A][B]. By what factor does the rate of reaction increase when both [A] and [B] are doubled?
The reaction A + 2 B → C has the rate law rate = k[A][B]. By what factor does the rate of reaction increase when both [A] and [B] are doubled?
Follows • 2
Expert Answers •1

01/31/21

For the reaction 2 A + 4 B → 2 C + 4 D, what is the absolute magnitude of the rate of change for [B] when [C] is increasing at 6.6 M/s?
For the reaction 2 A + 4 B → 2 C + 4 D, what is the absolute magnitude of the rate of change for [B] when [C] is increasing at 6.6 M/s?
Follows • 2
Expert Answers •1

01/31/21

FeCl₃ has a van't Hoff factor of 3.400. What is the freezing point (in °C) of an aqueous solution made with 0.7100 m FeCl₃? (Kf for water is 1.860 °C/m)
FeCl₃ has a van't Hoff factor of 3.400. What is the freezing point (in °C) of an aqueous solution made with 0.7100 m FeCl₃? (Kf for water is 1.860 °C/m)
Follows • 2
Expert Answers •1

01/31/21

In an experiment run at 22°C, a reading from the eudiometer of 46.78 mL corresponds to what true volume
A student calibrated a eudiometer by first recording the mass of the empty eudiometer followed by filling the eudiometer to the 50.00 mL line with deionized water at 22°C and recorded the mass. The... more
Follows • 2
Expert Answers •1

01/31/21

The Henry's law constant at 25 °C for CO₂ in water is 0.035 M/atm. What is the solubility of CO₂, in molarity units, in 1.0 L of water when the partial pressure of CO₂ is 1.5 atm?
The Henry's law constant at 25 °C for CO₂ in water is 0.035 M/atm. What is the solubility of CO₂, in molarity units, in 1.0 L of water when the partial pressure of CO₂ is 1.5 atm?
Follows • 2
Expert Answers •1

01/31/21

What mass in grams of CH₃OH (MM = 32.04 g/mol) would need to be added to 460.1 g of water in order to lower the freezing point of water by 12.0 °C? (Kf for water is 1.86 °C/m)
What mass in grams of CH₃OH (MM = 32.04 g/mol) would need to be added to 460.1 g of water in order to lower the freezing point of water by 12.0 °C? (Kf for water is 1.86 °C/m)
Follows • 2
Expert Answers •1

01/31/21

What mass in grams of CH₃OH (MM = 32.04 g/mol) would need to be added to 460.1 g of water in order to lower the freezing point of water by 12.0 °C? (Kf for water is 1.86 °C/m)
What mass in grams of CH₃OH (MM = 32.04 g/mol) would need to be added to 460.1 g of water in order to lower the freezing point of water by 12.0 °C? (Kf for water is 1.86 °C/m)
Follows • 2
Expert Answers •1

01/30/21

Two 20.0 g ice cubes at −11.0 ∘C are placed into 265 g of water at 25.0 ∘C.

Assuming no energy is transferred to or from the surroundings, calculate the final temperature, 𝑇f, of the water after all the ice melts.heat capacity of H2O(s) 37.7 J/(mol⋅K)heat capacity... more
Follows • 2
Expert Answers •1

01/30/21

Enthalpy Changes
50.0mL of 0.500 mol/L of Copper (II) sulfate solution is mixed with 50.0mL of 1.00 mol/L solution of sodium hydroxide in a coffee-cup calorimeter. The temperature change is recorded to be 5.32°Ca.... more
Follows • 2
Expert Answers •1

01/29/21

What is the molar ratio in this equation
I have this equation and I am trying to find the concentration of the oxalic acid. I need to know the ratio of the MnO4- and the H2C2O2. The equation is 6H + 2MnO4 + 5H2C2O2 --> 2Mn + 8H2O +... more
Follows • 2
Expert Answers •1

01/29/21

need chemistry help please

Round sig figs correctly How many grams of oxygen are required for 100.0 grams of citric acid (C6H8O7) to combust completely?
Follows • 2
Expert Answers •1

01/29/21

Convert the following into correct scientific notation:
I got the numbers right, but not the correct powers.a) 445.5 X 104 I got 4.455 X 10 to the? It is not power 4 and it is not power 2b) 7804.7 X 10-6 I got 7.8047 X 10 to the? It is not power -6 and... more
Follows • 2
Expert Answers •2

01/29/21

Perform the following operations. Express your answers with the correct number of significant figures (don’t forget to include your units in your final answer).
a. 37.26 m + 2.7 m + 0.0015 m =b. 256.3 mL + 2 mL + 137 mL + 10 mL =c. 300. kPa x 274.57 mL / 547 kPa =d. 346 mL x 200 K / 546.4 K =This isn’t school work it is practice but I’m confused any help... more
Follows • 2
Expert Answers •1

01/29/21

How to determine a formula is molecule or formula unit?
I read difference sources but still confuse on how to determine a formula is a "molecule" or "formula unit" as the unit when I write conversion factors. For example,C3H8 molecule?NaCl formula... more
Follows • 2
Expert Answers •2

01/28/21

Could I get help with this enthalpy problem.

2H2(g) + O2(g) → 2H2O(l) ∆H = -572kJ a. How much heat is evolved from 1 mole of water? b. How much heat is evolved when 4.03g hydrogen are reacted with excess oxygen? c. How much... more
Follows • 2
Expert Answers •1

01/28/21

Does BrF5 have resonance structures? Isomers? Explain
Follows • 2
Expert Answers •1

01/28/21

If 6.0 mol of HF is added to 4.5 mol SiO 2 , which is the limiting reactant?
Silicon dioxide (quartz) is usually quite unreactive but reacts readily withhydrogen fluoride according to the following equation.SiO 2 (s) + 4HF(g)-------------SiF 4 + 2H 2 O(l)
Follows • 2
Expert Answers •1

01/28/21

Explain in detail if Bromine Pentafluoride (BrF5) has resonance structures? Isomers? Draw lewis structures and identify which one is the most likely structure using Formal Charges.
show a variety of possible ways
Follows • 2
Expert Answers •1

01/28/21

Calculate the number of molecules of NH3 if you have 4.86 moles.
Follows • 2
Expert Answers •2

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.