01/14/21

Chemistry Equilibrium (Can Someone Answer This)
Consider the reaction 2NOCl(g) —> 2NO(g) + Cl2(g). At 25oC, a particular experiment showed the equilibrium pressures to be PCl2 = 3.00 E-3 atm PNO(g) = 1.25 E-3 atm PNOCl(g) = 1.20... more
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01/14/21

To the nearest​ millimeter, a cell phone is 105 mm long and 72 mm wide. What is the ratio of the width to the​ length?
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01/14/21

Titration problems
A student performs a titration to determine the concentration of a solution of nitric acid, HNO3. The student starts with 45.0 mL of the acid in a flask and titrates it against a standard solution... more
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01/14/21

Solve: x + 115 = 7
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01/14/21

Find the equation of the line that passes through the point (2,4) and is parallel to the line y=3x+3 . Write the equation using the​ slope-intercept form.
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01/13/21

What is the slope of the line that passes through the point(-6,-5) and has a slope of -1/2
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01/13/21

Quadratic Functions
Elli has 1400m of fencing and wants to fence off a rectangle ostrich run that is at the bottom of a cliff face. She needs no fence along the cliff face. what are the dimensions of the ostrich run... more
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01/13/21

Write the slope -intercept form of equation of the line through the given slope
through : (- 1, - 3) slope = 3
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01/13/21

If Jan used 3 gallons of gas to go 141 miles, how far could he go on 7 gallons?
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01/13/21

Empirical Formula Practice
A 2.241  sample of manganese reacts with oxygen to form 2.894  of the metal oxide.Calculate the empirical formula of the oxide.    Express your answer as a chemical formula.
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01/13/21

Empirical Formula Practice
Lactic acid, employed in pharmaceutical technology to produce water-soluble lactates, has the following elemental composition: , 40.00 ; , 6.71 ; , 53.29 .Calculate the empirical formula of lactic... more
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01/13/21

Solve for x: 2^7x-5=16
7x-5 is all one exponent attached to the 2
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01/12/21

1 mole of Cu(NO2)2.xH2O forms 1 mole of CuO. 7.26g of a hydrate, Cu (NO3)2.xH2O formed 2.4g copper (II) oxide.
number of moles of CuO formed =_____number of moles Cu (NO3)2.xH2O in 7.62g =_____mass of 1 mole of Cu(NO3)2.xH2O =_____gmass of 1 mole of Cu (NO3)2 is 188gthe value of x in this hydrate = _______
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01/12/21

Convert 4.58 x 10^23 formula units sodium sulfate to grams
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01/12/21

im has to travel 3 kilometers to meet his friend. From his friend's house, Jim walks to the gym, which is 100 meters farther down the road. What is the total distance that Jim traveled
I'm having to travel 3 kilometers to meet his friend. From his friend's house, Jim walks to the gym, which is 100 meters further down the road. What is the total distance that Jim traveled?
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01/11/21

Please help me on this Chemistry question.

20 grams of H₂S react with 20 grams of O₂. What is the limiting reagent? a. H₂Sb. O₂c. SO₂d. H₂O6 moles of O₂ react. Assume you have more than enough H₂S to react with it. How many moles of SO₂ are... more
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01/11/21

Find a2 and a3.
a1=–3an=an–1–8
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01/11/21

How much energy, in kilocalories, is in the clam chowder? (Round off the kilocalories to the tens place.)
One cup of clam chowder contains 15g of carbohydrate, 16g of fat, and 3g of protein
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01/10/21

A researcher performed a combustion analysis on a 5.00 g sample of ethanol, the alcohol in wine. The data showed that the sample contained 261 g of carbon and 0.66 g of hydrogen.

The researcher assumed that the remaining mass was oxygen. Calculate the percentage composition of ethanol.
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01/10/21

In a percentage composition investigation a compound was decomposed into its elements: 20.0 g of calcium, 6.0 g of carbon, and 24.0 g of oxygen. Determine the percentage composition of this compound
can you do it step by step
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01/10/21

Put these four molecules in INCREASING order (from lowest to highest) of predicted melting and boiling point temperatures:
Methane (CH4), ethane (C2H6), propane (C3H8) and butane (C4H10) are all substances that are used as combustible fuels. Put these four molecules in INCREASING order (from lowest to highest) of... more
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01/10/21

b2h6+3o2=b2o3+3h2o if you want 14.1 mol of water, how much borohydride will you need
Im stuck with this question for my homework
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01/10/21

Chemistry Calculations homework help!!
Q1. What is the volume of H2O produced from a reaction of 5.98g of O2? (Answer = 8.372 L of H2O)2H2 + O2 → 2H2OQ2. How many moles of NaCl are produced from 12.45L of Cl2? (Answer = 1.11 moles of... more
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01/09/21

Read the following feature story and list the 5 Ws + How in the spaces provided.
“Ball of fire crash” kills 7 Cold Lake, Alberta—A transport plane crashed in a giant ball of fire near a runway at an air force base yesterday, killing all seven people aboard. The cause of the... more
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01/09/21

What is the answer?
Given the following reaction:    4HCl(g) + 6NO(g)   5N2(g) + 6H2O(g)How many grams of HCl are needed to completely react with 734.0g of nitrogen monoxide?
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