Chemistry » Page 147

Chemistry

Pranav Decker

Which statement describes the charge and location of an electron in an atom?

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Chemistry

Reynaldo

How would you prepare 70.0 ml of 0.200 m hno3 from a stock solution of 5.00 m hno3?

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Chemistry

Owens

What is the law of conversation of mass

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Chemistry

Liana Kerr

What mass of precipitate will be produced from the reaction of 50.0 mL of 2.50 mol/L sodium hydroxide with an excess of zinc chloride solution.

Show your work

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Chemistry

Sterling

A block of aluminum metal has a volume of 3.15 L and a mass of 8.51 kg. What is the density (g/mL) ?

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Chemistry

Courtney

If electrons fall back down to the 2nd energy level, what type of electromagnetic radiation is released?

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Chemistry

Armando Chan

Most modern forms of transportation are powered by fossil fuels. Carbon dioxide, methane, carbon monoxide, and other gases are released into the atmosphere during the production and combustion of these fuels. How might these gases cause climatic changes? These gases have no effect on atmospheric temperatures, so they are unable to cause any type of climatic changes. These gases cause more water vapor to condense, making climates wetter than they were in the past. These gases reduce the amount of thermal energy escaping into space, effectively warming the atmosphere.

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Chemistry

Dexter Knight

What is _CaH2 (s) + _H2O (l) → _Ca (OH) 2 (s) + _H2 (g)

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Chemistry

Miley

Find the mass of each of these substances? 2.40 mol NaOH

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Chemistry

Payten Kane

A student makes measurements to calculate the density of a rod of aluminum to be

3.26 g/cm3. If the actual density of the aluminum rod is 2.70 g/cm3, what is the

percent error?

15.5%

5.93%

94.41%

20.7%

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Chemistry

Raelynn Snow

87 g of oxygen gas would occupy how many liters of volume at stp

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Chemistry

Eliana

Which of the following examples demonstrates a compression force?

a plucking a guitar string

b. squeezing a sponge

c. pulling a wagon

d. dropping an apple

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Chemistry

Virginia Nolan

What happens when a hydrogen atom acts like a nonmetal in a chemical reaction? a. It gains an electron. c. It loses an electron. b. It loses a neutron. d. It gains a neutron.

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Chemistry

Jada Mcdowell

Which of the following is a n o n i n f e c t i o u s disease that affects the respiratory system a influenza b cold c asthma d parkinson's

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Chemistry

Carolina Pham

Which is a family with nonmetals whose atoms gain or share one electron in chemical reactions

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