Chemistry » Page 58

Chemistry

Koen Bonilla

In which of these statements are protons, electrons, and neutrons correctly compared? 1. Quarks are present in protons and neutrons but not in electrons. 2. Quarks are present in protons, neutrons, and electrons. 3. Quarks are present in neutrons and electrons but not in protons. 4. Quarks are present in protons and electrons but not in neutrons.

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Chemistry

Tucker Gregory

Sometimes fossils can be found in sedimentary rocks. Which statement best explains why?

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Chemistry

Levy

Lithium-6 is 4% abundant and lithium-7 is 96% abundant. What is the average mass of lithium?

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Chemistry

Geovanni Wilson

How many moles of Li3PO4 are in 2.2 L of a 0.6 M solution of Li3PO4? (remember Molarity=moles of solute/liters of solution)

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Chemistry

Tyshawn Evans

An atom or a group of atoms possessing a positive or negative electrical charge is called a (n

A.) molecule

B.) compound

C.) element

D.) ion

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Chemistry

Carlos Brock

Which is a pure substance?

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Chemistry

Addie

What two characteristics of objects impact kinetic energy the most?

Question 3 options:

mass and weight

velocity (speed) and distance

mass and velocity (speed)

mass and distance

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Chemistry

Franco Bradshaw

A 0.200-kg cube of ice (frozen water) is floating in glycerine. The gylcerine is in a tall cylinder that has inside radius 3.40 cm. The level of the glycerine is well below the top of the cylinder. Part AIf the ice completely melts, by what distance does the height of liquid in the cylinder change? Express your answer with the appropriate units. d =

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Chemistry

Jayson Clements

Which is an example of chemical change

A. mixing of posted colors

B. formation of clouds

C. sugar dissolving in water

D. separating salt from seawater

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Chemistry

Tripp Collins

Do solids or liquids have stronger intermolecular forces

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Chemistry

Leila Cortez

For each reaction, identify the precipitate or lack thereof. cacl2 + k2co3 - -> caco3 + 2kcl

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Chemistry

Kailee Terrell

A 3.25 liter container of ammonia gas exerts a pressure of 652 mm Hg at a temperature of 243 Kelvin. Calculate the pressure of this same amount of gas in a 2.50 Liter container at a temperature of 221 Kelvin

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Chemistry

Quincy Mcdaniel

Which of the following elements is classified as a nonmetal

Xe

Ca

Sb

Cu

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Chemistry

Giada Stewart

The average rate of disappearance of ozone in the reaction 2o3 (g) → 3o2 (g) is found to be 7.25*10-3 atm over a certain interval of time. what is the rate of appearance of o2 during this interval?

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Chemistry

Haylee Mcintyre

The magnitude of an earthquake can range from less than 1 to at least

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