09/05/20

algebra problem
Find the lesser of two consecutive integer with a sum greater than 16
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09/05/20

the cube of the difference of 5 times x and 7 divides by the sum of 7 times x and 1
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09/05/20

I need help solving this right.
If the density of pure ethanol is 0.789g/mL, what is the molarity of the 20% ABV solution that you have prepared. (Ethanol is C2H6O)
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09/05/20

If 2379 kJ of energy reaches a square meter (m2) in one hour, how much total solar energy reaches the entire United States per hour? The entire area of the United States is 9,158,960 km2 .
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09/05/20

The total volume of a solid and liquid together is 86.0 mL. The liquid solvent has a mass of 35.3 g & density of 0.865 g/mL. What's the mass of the solid given its density, 3.00 g/mL.
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09/04/20

How much heat must be removed to freeze 92 moles of water at its freezing point? The heat of crystallization of water equals -6.02kJ/mol.

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09/03/20

Chemistry Question
A sheet of aluminum foil has a length width and height of 8.2 cm 9.93 cm and 0.00150 cm respectively aluminum has a density of 2.70 g/cm³ . What is the mass in grams of the foil?
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09/03/20

What is the density (g/ml) of an object having a mass of 22.0 grams and a volume of 200.0 decaliters? Provide standard view value (correct SF) and units.
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09/03/20

Which of the following is a reason why it is preferred to isolate the variable before solving an algebraic equation:

A. It allows you to easily input the values into the variables.B. It makes it to where you don't have to solve parts of the equation and write partial answers.C. It simplifies the original equation... more
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09/03/20

how do i do these chemistry questions?
Draw a molecular model of ethane, the alkene with molecular formula C2H4. Then, orient the model so that the double bond lies in the plane of the paper and the hydrogen atoms are pointed toward... more
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09/02/20

Chemistry Home work help please

6. Name the following structures:a) CH3 CH2CH2CH3b) H2C=CHCH2CH3c) CH triple bond CHd) CH triple bond CCH2CH2CH2CH3
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09/02/20

What is 2.9×10^-7 centigrams converted to megagrams?
Please also provide the solution using dimensional analysis
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09/02/20

precal question
It is estimated that the annual cost of driving a certain new car is given by the formulaC = 0.36m + 2900where m represents the number of miles driven per year and C is the cost in dollars. Jane... more
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09/01/20

precal question
A rental company charges $65 a day and 20 cents a mile for renting a truck. Michael rents a truck for 3 days, and his bill came to $276. How many miles did he drive?
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09/01/20

Sum of 12 and number is 4
Sum of 12 and number is 4
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09/01/20

What is the percent mass of calcium in a calcium supplement if 1.25 g of calcium carbonate is extracted from a 2.50 g pill?
What is the percent mass of calcium in a calcium supplement if 1.25 g of calcium carbonate is extracted from a 2.50 g pill?
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08/31/20

STOICHIOMETRY REACTION
How many grams of PbBr2 will precipitate when excess FeBr2 solution is added to 43.0 mL of 0.788 M Pb(NO3)2 solution?Pb(NO3)2(aq) + FeBr2(aq) PbBr2(s) + Fe(NO3)2(aq)
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08/29/20

Calculate the molar masses of carbon dioxide, glucose, and oxygen gas.

Green plants take in water (H2O) and carbon dioxide (CO2) and produce glucose (C6H12O6) and oxygen has (O2). calculate the molar masses of carbon dioxide, glucose, and oxygen gas.
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08/26/20

write phrase as a mathematical expression

The quotient is 5 more than the radius, r, and 2.
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08/24/20

What number of moles of O2 is needed to produce 75 grams of P4O10 from P? (Molecular weight P4O10 = 284 g/mol)
Answer choices A.0.26 molesB.2.64 molesC 0.5 molesD. 1.25 moles
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06/30/20

Perform the indicated operation and give an answer with the proper number of significant figures: 48.2 m + 3.87 m + 48.4394 m
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06/30/20

In a stack of bricks, layer contains one more brick than the layer above. The top layer consists of a single brickthere are 105 bricks in the stack, how many layers are there
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06/11/20

Word Problem Involving Fractions and Division
A metal rod will be cut into pieces that are each 1/48 meters long. The rod is 3/8 meters long. How many pieces will be made from the rod?
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06/09/20

need the answer pleaseeeeeeee
The half-life of a radioactive isotope is the time it takes for a quantity of the isotope to be reduced to half its initial mass. Starting with 210 grams of a radioactive isotope, how much will be... more
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06/09/20

Question in description

During a weekend trip riding his motorcycle. Neil plans to average 55 miles per hour.a) What type of function would be a good model for this situation? b) Sketch a graph representing the distance... more
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