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Chemistry

Haven

At a pressure of 1.00 atm, the solubility of nitrogen in water is 23.5 mg gas/100 g water. Indicate whether each of the following changes would increase or decrease the solubility of nitrogen in water. Drag the appropriate items to their respective bins.

a) the solution is placed in a chamber where the pressure is 0.50atm

b) the solution is brought into outer space

c) the solution is canned at a pressure of 2.04 atm

d) the solution is carried to the top of a mountain

e) the solution is submerged 40m under water

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Chemistry

Valentina Merritt

Which produces wave particles that move and displace one another? A) a radio B) a guitar C) a light bulb D) a microwave oven

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Chemistry

Sellers

Which of the following volumes is the smallest?

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Chemistry

Trystan Mcguire

Which of these are common to all mammals?

A: type of reproductive system, brain size, skin

B: digestive system, heart lungs

C: digestive system, number of toes, blood

D: kidneys, liver, skeletal structure

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Chemistry

Mareli Buck

Which explanation best compares the movement of particles in the three states of matter?

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Chemistry

Salty

A steel tank with a volume of 9.583 L contains N2 gas under a pressure of 4.972 atm at 31.8 °C. Calculate the number of moles of N2 in the tank.

a.

0.002 mol

c.

0.525 mol

b.

0.018 mol

d.

1.90 mol

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Chemistry

Jakobe Olson

Is phosphorous an atom, element, or compound

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Chemistry

Jazlene Blankenship

A noble gas consists of three isotopes of masses of 19.99 amu, 20.99 amu, and 21.99 amu. the relative abundances of these isotopes are 90.92%, 0.257%, and 8.82% respectively. what is the average atomic mass of this noble gas? what noble gas is this?

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Chemistry

Emiliano

Adding iron filings to sand

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Chemistry

Adalyn Ward

Which of the following sets of empirícal formula, molar mass, and molecular formula is correct?

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Chemistry

Atlas

Hexane and hexene are hydrocarbon compounds from different homologous series. the combustion of these two compounds produce different amount of soot. explain the difference based on the percentage of carbon by mass.

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Chemistry

Carmen Chan

Reactants → products

Based on the Law of Conservation of Matter, describe the relationship between the mass of the reactants and the mass of the products.

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Chemistry

Jayvon Werner

What is the first step in the scientific method? A. form a hypothesis B. illustrate the process C. observe and ask questions D. draw conclusions

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Chemistry

Iliana Zuniga

Nitrogen oxide racts with bromine to form nitrosyl bromide. A sample of 0.0655 mol NO with 0.0328 mol Br2 gives an equilibrium mixture containing 0.0389 mol NOBr. What is the composition of the equilibrum mixture?

2NO (g) + Br2 (g) / leftrightarrow 2NOBr (g)

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Chemistry

Benji

Determine the elements present in sodium hydrogen carbonate

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