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Chemistry

Zackary Bernard

In an illustration, lines of force are drawn around a magnet to illustrate the magnetic

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Chemistry

Kyan Lowe

What are geometric isomers?

compounds that have the same types of atoms arranged in different orders

compounds that have the same number of carbon atoms arranged in different orders

compounds that have the same atoms arranged in the same order, but with different three-dimensional orientations

compounds that have the same atoms arranged in the same order, and have the same three-dimensional orientations

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Chemistry

Charlotte Barnes

Which of the following statements is true of an aqueous solution of sodium chloride? One that has 30.0 grams of NaCl dissolved in 100 grams of water is more concentrated than one that has 15.0 grams of NaCl dissolved in 100 grams of water. One that has 30.0 grams of NaCl dissolved in 100 grams of water is more dilute than one that has 15.0 grams of NaCl dissolved in 100 grams of water. One that has 30.0 grams of NaCl dissolved in 100 grams of water would have the same molarity as one that has 15.0 grams of NaCl dissolved in 100 grams of water. One that has 30.0 grams of NaCl dissolved in 100 grams of water has less solute than one that has 15.0 grams of NaCl dissolved in 100 grams of water.

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Chemistry

Kolby Durham

Because of ocean acidification, it is expected that in 2050 the mass of CaCO3 deposited annually in coral reefs will be 20% less than is deposited currently. Calculate how much less CaCO3 in Kg is expected to be deposited in 2050 than would be deposited if ocean water pH were to remain at its current value.

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Chemistry

Amiyah Shaw

How does an object become negatively charged?

It gains electrons.

It loses electrons.

It gains protons.

It loses protons.

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Chemistry

Reece Robertson

What is the electron configuration for Ga

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Chemistry

Marina Day

Which concentration of ethanol is the most effective bactericide?

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Chemistry

Pacheco

One of the significant achievements of Fahrenheit was to: O make thermometers smaller using air O make thermometers compact using alcohol O make thermometers more accurate using alcohol O make thermometers smaller using mercury

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Chemistry

Guest

The tetragonal crystal system below possesses how many faces?

2 faces

4 faces

6 faces

8 faces

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Chemistry

Simon Hinton

When an F atom becomes an F-ion, the Fatom

gains a proton

gains an electron

loses an electron

loses a proton

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Chemistry

Maxim Curry

A gas changes directly to a solid during (1) fusion (3) saponification (2) deposition (4) decomposition

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Chemistry

Reagan Meyer

Performing Percent Composition calculations

Carbon dioxide (CO2) is a gaseous compound. Calculate the percent composition of this compound,

Answer using three significant figures.

What is the percent by mass of carbon?

What is the percent by mass of oxygen?

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Chemistry

King Nolan

A balloon contains 0.15 moles of co2 gas. how many molecules of co2 are in the balloon?

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Chemistry

Guest

Arrange the steps in order to describe what happens to a gas when it cools. The A particles of gas move slower.

B The gas changes to a liquid.

C The gas loses thermal energy.

D The space between the gas particles decreases.

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Chemistry

Sophie Dorsey

The rock record indicates that photosynthesis began on Earth about 3.5 million years ago.

a. True

b. False

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