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The EPA limit for lead in bare soil for children’s play areas is 400 ppm by mass. A contractor is delivering 1171 kg of soil to a new play area. What is the maximum mass of lead (in grams) allowed in the soil delivery?

Lead ions can be precipitated from solution with KCl according to the following reaction:
Pb2+(aq)+2...

A chemistry graduate student is given 450.mL of a 1.20M propanoic acid 

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2.25 g of C6H12O6 is burned in a bomb calorimeter containing 550. g of water and the temperature inc...

An unknown mass of each substance, initially at 25.0°C absorbs 1910 J of heat. The final temperature...

Solid aluminum (Al) and oxygen (O2) gas react to form solid aluminum oxide (Al2O3). Suppose you have...

Diethyl ether is produced from ethanol according to the following equation: 2CH3CH2OH(l) →CH3CH2OCH2...

Determine
analysis: 52.2% C; 13.0 % H; 34.8 % O.
1
(
An organic compound witha molar mass of 116.2 g...

6. A stock solution of barium hydroxide was prepared by dissolving 4.71 g of barium
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Given these three reactions and their Δ?∘ values
reaction 1: C(s)+2H2(g)⟶CH4(g)        Δ?∘1=−74.6 kJ...

The equipment used for aviation communications emits high‑frequency radiowave energy with a waveleng...

Consider the combustion reaction for octane (C8H18),(C8H18), which is a primary component of gasolin...

3. A 0.605 g sample of a certain metal, X, reacts with hydrochloric acid to form
XCI3 and 450 mL of ...

How many moles of phosphine are prepared from 7.00 moles of Ca3P2?

How do quenchers affect the duration of chemiluminescence reactions?

Find the change in internal energy for this reaction (in kJ)
3NO2(g) + H2O(l) → 2HNO3(aq) + NO(g)
(-...

mheducation.com/tlow/connect.html
Saved
Click the "draw structure" button to launch the drawing util...

A female patient has blood hemoglobin of 9.5% (m/V). The normal level is between 12 and 16 g/dL. Doe...

The reaction between iron(II) oxide and carbon monoxide produces iron and carbon dioxide. How many m...

Given the following equilibrium system:
2SO2(g) + O2(g) ↔ 2SO3(g) + 99.1 kJIf additional SO2(g) is a...

Determine the quantity (g) of pure MgSO4 in 2.4 g of MgSO4•7H2O. Show your work.

The temperature rises from 25.00°C to 29.00°C in a bomb calorimeter when 3.50 g of sucrose undergoes...

Write a balanced equation for the combustion of C3H8(g) (propane)
-i.e. its reaction with O2(g) form...

Iron(III) oxide reacts with carbon monoxide according to the equation:
Fe2O3(s)+3CO(g)→2Fe(s)+3CO2(g...

[Review Topics]
References)
Classify the following compounds as chiral, achiral (but not meso), or m...

Sodium Borohydride Reduction @ the bottom of the page #1 and #2

Consider the two reactions.
2NH3(g)+3N2O(g)⟶4N2(g)+3H2O(l)            Δ?∘=−1010 kJ
4NH3(g)+3O2(g)⟶2N...

The Ostwald process is used commercially to produce nitric acid, which is, in turn, used in many mod...

Estimate the value of the equilibrium constant Kc for the reaction below from the data in the graph....

Write a step-by- step procedure for the preparation of 500 mL of .350 M LiNO3 solution. You will beg...

Calculate the energy in kJ/mol of a mol of photons in the microwave region of the electromagnetic sp...

Prepare a written plan for making up 100.0 ml of a solution that is 0.100M in Ca+2 ion using 2.00 M ...

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When 11.2 g CaCO3 reacts with 300ml of 37% hydrochloric acid (density: 1.2 g/mL), 4.61 g of CO2 is
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Complete and balance this equation, indicating clearly which product is the precipitate. If no react...

Review I Constants I Periodic Tabl
You may want to reference (Pages 272- 279)
Section 7.2 while comp...

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Indicate whether the pair of structures shown represent stereoisomers, c...

What is the mole fraction of ethane in a mixture that contains 6.92 grams of methane (CH4) and 16 gr...

For the aqueous [Cu(NH3)4]^2+ complex =Kf=5.6x10^11 at 25°C.Suppose equal volumes of 0.0058M Cu(NO3)...

A sample of a compound is found to contain 21.82 g of carbon, 9.16 g of hydrogen, 20.42 g of oxygen,...

For the chemical reaction shown,
2H2O2(l)+N2H4(l)⟶4H2O(g)+N2(g)
determine how many grams of N2 are p...

The number of vacancies in some hypothetical metal increases by a factor of 5 when the temperature i...

1.
Write balance complete molecular equation, balance, and identify the states of matter when
each o...

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What is the concentration of a solution with an absorbance of 0.23 a.u. in ppm when y=45.3509y

How do you find moles of a reactant using the molarity equation?

Parts per million or ppm is term used to express concentration. It is somewhat similar to weight percent, except multiply the mass ratio by 1,000,000 instead of 100.

As per the data given in the question,ppm of bare soil by mass = 400mass of solution = 1171 kgAs per the conversion factor, 1 kg = 1000 gTherefore, mass of solution = 1.171&times;106 g

On substituting all the values in t...

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The EPA limit for lead in bare soil for children’s play areas is 400 ppm by mass. A contractor is delivering 1171 kg of soil to a new play area. What is the maximum mass of lead (in grams) allowed in the soil delivery?

The EPA limit for lead in bare soil for children’s play areas is 400 ppm by mass. A contractor is delivering 1171 kg of soil to a new play area. What is the maximum mass of lead (in grams) allowed in the soil delivery?

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