02/18/21

chemistry help :)
If you want to make a 0.197 M solution using 4.40 grams of sodium hydroxide, how many milliliters does the solution need to occupy?
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01/21/21

I need help on this problem.
So I have is 8.56 x 10-3 moles of NaCl are equal to how many grams of NaCl?help is needed.
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01/21/21

Chemistry Dilution
What volume of water must be added to 8 mL of concentrated 17.4 M HCl solution to dilute it to 7 mol/L?
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01/20/21

please help me!
The value of a home in 2015 was $400,000. Its value has been doubling each decade.1. If v is the value of the home, in dollars, write an equation for v in terms of d, the number of decades since... more
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01/20/21

Kelly and sammie have 47 scrunches. Kelly has 11 more scrunchies than sammie. How many scrunchies does each girl have?
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01/20/21

PLEASE help. Algebra one class. I need 2 equations and the cost per hat and glove
At a sale on winter clothing, Amberlee bought two pairs of gloves and four hats for $48.50. Ryan bought two pairs of gloves and two hats for $34.00. What were the prices for the gloves and hats?
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01/20/21

Unit 5 Quiz Review

Show your work for the following problem: How many grams are in 12.3 mol of sodium iodide?  =       Please answer and explain.
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01/20/21

Why is blood transfusion a specific immune response
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01/20/21

The width of a rectangle is y feet long. The rectangle is 4 feet longer than it is wide. What is the area of the rectangle?
Which expression represents the area?a. y(y + 4) sq ftb. y + 4 sq ftc. 4y sq ft
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01/20/21

chemsitry last question
A student attempts to dissolve solid sodium chloride in water and in hexane (C6H14). NaCl dissolves in one of the solvents but not in the other. which of the following statements most accurately... more
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01/19/21

How many grams of hydrogen gas are produced in the reaction of 60 grams of HCl with excess zinc?
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01/15/21

For the reaction 3 A + 4 B → 2 C + D, what is the magnitude of the rate of change for [C] when [D] is increasing at 2.7 M/min?
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11/08/20

How many grams of Kr are in a 7.40 L cylinder at 31.9 ∘C and 5.05 atm?
How many grams of Kr are in a 7.40 L cylinder at 31.9 ∘C and 5.05 atm?
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11/08/20

If 4.00 mol of an ideal gas has a pressure of 2.25 atm and a volume of 65.33 L, what is the temperature of the sample in degrees Celsius?
If 4.00 mol of an ideal gas has a pressure of 2.25 atm and a volume of 65.33 L, what is the temperature of the sample in degrees Celsius?
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11/08/20

If 41.5 mol of an ideal gas occupies 67.5 L at 37.00 ∘C, what is the pressure of the gas?
If 41.5 mol of an ideal gas occupies 67.5 L at 37.00 ∘C, what is the pressure of the gas?
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11/08/20

A sample of an ideal gas has a volume of 2.23 L at 289 K and 1.07 atm. Calculate the pressure when the volume is 1.16 L and the temperature is 301 K.

A sample of an ideal gas has a volume of 2.23 L at 289 K and 1.07 atm. Calculate the pressure when the volume is 1.16 L and the temperature is 301 K.
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11/08/20

A sample of an ideal gas has a volume of 3.55 L at 14.60 ∘C and 1.90 atm. What is the volume of the gas at 19.80 ∘C and 0.990 atm?

A sample of an ideal gas has a volume of 3.55 L at 14.60 ∘C and 1.90 atm. What is the volume of the gas at 19.80 ∘C and 0.990 atm?
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11/05/20

Biology Question

9. You have molecule A with a molecular weight of 40000daltons. You have molecule B with a molecular weight of 80000 Daltons. You put them through a size exclusion chromatography column that has an... more
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10/21/20

Which of the following has the smallest mass?
a. 1.75 x 1023 atoms of iron b. 13.5 grams of copper c. 0.38 moles of chromium d. 0.50 ounces of zinc
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10/21/20

A compound containing elements A and B is decomposed to give 0.177 mol A and 0.354 mol B. What is the compound's empirical formula?
a. ABb. A2B c. AB2d. A2B3
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10/21/20

A balloon filled with helium gas at 20°C occupies 2.91 L at 1.00 atm. The balloon is immersed in liquid nitrogen at -196°C, raising the pressure to 5.20 atm.

What is the volume of the balloon in the liquid nitrogen?
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09/22/20

How do you tell if a mutation is on the X chromosome?
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