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Ezekiel Kirk
ChemistryChemistry
How many liters of phosphine are formed when 0.42 L of hydrogen react with phosphorus
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Makhi Perry
ChemistryChemistry
Which sample of matter has the greatest distance between molecules at STP?

A)

N2 (g)

B)

NH3 (aq)

C)

C6H14 ()

D)

C6H12O6 (s)
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Camille Burgess
ChemistryChemistry
What happens is that passes through the Catapillar's in the small intestine
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Tony Lewis
ChemistryChemistry
One mole of a monatomic ideal gas is subjected to the following sequence of steps: a. Starting at 300 K and 10 atm, the gas expands freely into a vacuum to triple its volume. b. The gas is next heated reversibly to 400 K at constant volume. c. The gas is reversibly expanded at constant temperature until its volume is again tripled. d. The gas is finally reversibly cooled to 300 K at constant pressure. Calculate the values of q and w and the changes in U, H, and S.
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Madyson Santana
ChemistryChemistry
Write the complete balanced equation for the following reaction:

C7H6O + O2 yields CO2 + H2O
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Kadence Parker
ChemistryChemistry
An aluminum engine block has a volume of 4.61 L and a mass of 12.72 kg. What is the density of the aluminum in grams per cubic centimeter?
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Nikolai Ruiz
ChemistryChemistry
A cylinder of O2 gas occupies a volume of 60.50 L at STP. How many moles of oxygen

gas are in the cylinder?
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Mallory Hernandez
ChemistryChemistry
Which statements describe the effects of the solar wind on Earth? Check all that apply. The solar wind produces the northern and southern lights. The solar wind can cause the formation of new elements. The solar wind causes temperature changes on Earth's surface. The solar wind disrupts communication systems. The solar wind distorts Earth's magnetic field.
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Raul
ChemistryChemistry
What does daughter cells mean
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Virginia Fuentes
ChemistryChemistry
How do atoms relate to cells
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Krish White
ChemistryChemistry
Pd has an anomalous electron configuration. write the observed electron configuration of pd. express your answer in complete form in order of orbital filling. for exa
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Adan Patrick
ChemistryChemistry
Bob the chemist ran a TLC plate of his product, but the spot would not move off the baseline. The eluent he used consisted of a 30% polar / 70% non-polar solvent system. Which solvent system should he try next in order to get the compounds in his product mixture to move up the plate
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Carolina
ChemistryChemistry
1. Water is easily contaminated by both biological and chemical contaminants. Define and give 3 examples of each

2. What happens when you mix an acid and a base

3. How does ppm compare to ppb

4. How are coagulation and filtration used to clean water

5. Dante adds a small amount of sugar to a cup of warm water. After a period of time, the sugar is no longer visible. What happened to the sugar?
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Dana
ChemistryChemistry
Which of the following statements is true?

The square root of the molecular weight of a gas is equal to its rate of diffusion.

The rate of diffusion of a gas in inversely proportional to the square root of its molecular weight.

The rate of diffusion of a gas is directly proportional to the square root of its molecular weight.

The square root of the molecular weight of a gas is not related to its rate of diffusion.
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Amelie Brock
ChemistryChemistry
What is the volume of 377g of metal with a density of 13.9 g/cm3
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