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1.91 g H2 is allowed to react with 9.86 g N2, producing 1.74 g NH3.
What is the theoretical yield in grams for this reaction under the given conditions?
Express your answer to three significant figures and include the appropriate units.

Question #71843

If 0,5kg of dextrose is dissolved in 600ml of water to produce a solution with a final volumeof 1000ml what is the percentage w/w strength of the solution?

When the volume of a gas is
changed from 250 mL to 425 mL, the
temperature will change from 137° C. What is temperature 2? Using Charles law

If 13.3 moles of Cu and 43.2 moles of HNO3 are allowed to react, how many moles of excess reactant will remain if the reaction goes to completion?
3 Cu + 8 HNO3 → 3Cu(NO3)2 + 2NO + 4H2O

Question #1830f

What is the average molar mass of a gas that is 67.0% H and 33.0% He?

A compound X contains 50% sulpher and 50% oxygen by mass. what is the empirical ( simplest) formula of the compound X?
Options
a) SO b) SO2
c)SO3 d) SO4
please please Explain. :(

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#12%# of the student population in a school are lefthanded. In a classroom of #25# students, how many are lefthanded and how many are righthanded?

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A man invests $17,000 in two accounts. One account earns 5% interest per. year and the other earns 6.5& interest per year. If his total interest after one year is $970.00, how much did he invest in each account?

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How many atoms are in a #92.0*g# mass of ethyl alcohol?

A silver block, initially at 58.5°C, is submerged into 100.0 of water at 24.8°C in an insulated container. The final temperature of the mixture upon reaching thermal equilibrium is 26.2 °C. What is the mass of the silver block?

A railway carriage of mass 10000kg moving with a speed 15/s hits a stationary carriage of same mass. after the collision the carriage get coupled and ove together. what is their common velocity after collision?

The experimental calculation of the specific heat of aluminum was found to be 156 cal/g °C, but the actual value was given as 185 cal/g°C. What is the percent error?

The annual interest rate of Erika's savings account is 6.4%, and simple interest is calculated quarterly. What is the periodic interest rate of Erika's account?

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Here is the chemical reaction  Ca(NO3)2 + (NH4)3PO4 > Double displacement follows... If you start with 10.25 mL of .553M Ca(NO3)2 soln, how many moles of calcium nitrate do you have in the soln? Also a part 2 in the question.

Question #e7eb1

4FeS2 + 11 O2 → 2 Fe2O3 + 8 SO2
Given 75.0 grams of FeS2, how many grams of sulfur dioxide are produced (MM in g/mol: FeS2=119.99, O2=32, Fe2O3=159.7, SO2=64.07) ?
40.0. g
70.0 g
150. g
80.0 g

What is solute mass and mol solute of #NaHCO_3# which has the volume solution 250.0 mL and molarity 0.100 mol/L?

An object with a mass of #120 g# is dropped into #800 mL# of water at #0^@C#. If the object cools by #30 ^@C# and the water warms by #5 ^@C#, what is the specific heat of the material that the object is made of?

Question #42b7a

How do you solve this system of equations: #2x _ { 1}  10x _ { 2} + 7x _ { 3} = 7, 6x _ { 1}  x _ { 2} + 5x _ { 3} =  2 and  4x _ { 1} + 8x _ { 2}  3x _ { 3} =  22#?

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How many grams of #CuSO_4# are present in 652 mL of .250 M #CuSO_4# solution?

Marcus purchased 5 notebooks and 10 boxes of crayons for $31. Nina went to the same store and bought 10 notebooks and 5 boxes of crayons for $24.50. What is the cost of one notebook and one box of crayons?

What was the heat lost from the system if #"5.25 g"# of water was cooled from #64.8^@ "C"# to #5.5^@ "C"#? #C_P = "4.184 J/g"^@ "C"#

How do you use substitution to solve #3x  2y = 2# and # x = 3y  11#?

Question #39aec

A car's displacement is 42 km [S] after driving for .75 hours. What is the car's average velocity in km/h and m/s?

What is a substance formed by the chemical combination of two or more elements in definite proportions?

Heather invested $8,000 4year savings bond that pays 4.1% interest compounded annually. What is the value of the savings bond at the end of the 4 years?

Question #67561

How many moles of #Sr(NO_3)_2# would be used in the preparation of 2.50 L of a 3.5 M solution?

The densities of three aliquots of an unknown solution were found to be 1.028 g/mL, 1.043 g/mL, and 1.039 g/mL. Calculate the average density of this unknown solution?

Use the tabulated density of water at 17 degrees celsius to calculate the theoretical mass of water (in grams) that should be delivered by a #"10.00 mL"# pipet? Density of water at #17^@ "C"# #=# #"0.998778 g/mL"#

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What mass of dioxygen gas exists in a #51.7*L# volume of the gas under conditions of #"STP"#?

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A wood fire burns at 260 °C. What is the temperature in Fahrenheit?

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The ratio of the side lengths of an isosceles triangle is 7:7:3, and its perimeter is 190cm. What is the length of the base of the triangle?

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Aluminum will react with sulfuric acid in the following reaction: #2Al(s) + 3H_2SO_4(l) > Al_2(SO_4)_3(aq) + 3H_2(g)#. How many moles of #H_2SO_4# will react with 18 mol Al? How many moles of each product will be produced?

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How many grams of phosgenite can be obtained from 13.0 g of #PbO# and 13.0 g #NaCl# in the presence of excess water and #CO_2#?

An object with a mass of #18 g# is dropped into #400 mL# of water at #0^@C#. If the object cools by #150 ^@C# and the water warms by #12 ^@C#, what is the specific heat of the material that the object is made of?

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How does barium chloride react with sulfuric acid?

Air contains many substances, including nitrogen, carbon dioxide, and water vapor. What is air an example of?

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How do you calculate the amount of heat needed to increase the temperature of 250g of water from 20 C to 56 C? #C_g = 4.8 J/(Cg)#

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9. The density of water is 1.0 g/mL. What is the density of water in pounds/gallon?

In a laboratory, 23.5 g of cyclohexane is burned and 5.5 liters of carbon dioxide was obtained ?
a) Balance the reaction b) Calculate the reaction yield.
d(CO2)= 1.9 g/L

Question #f31fc

How do you figure out how many electrons a sodium ion has? Can it be determined with a flame test?

Mixture A was made by mixing different components together, but it appears to have one phase. What term best categorizes mixture A?

How are 3 states of matter similar?

Question #377d6

What term best describes the type of reaction that happens when a molecule or compound reacts with another molecule or compound, producing two new molecules or compounds?

What mass of #"potassium chlorate"# is necessary to generate a #5.5*g# mass of oxygen gas?

Question #292bf

The Sugar Sweet Company is going to transport its sugar to market. It will cost $5500 to rent trucks, and an additional $125 for each ton of sugar transported. What is the total cost to transport 16 tons of sugar?

Ms. Pecho currently owes $637.50 in simple interest on a loan of $2500 at an annual interest rate of 17%. How long has she had the loan?

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What is the charge of a cation? How do cations form?

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