Chemistry » Page 103

Chemistry

Makayla Greene

Of these gases, which has the fastest-moving molecules (on average) at a given temperature?

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Chemistry

Tristan Patterson

What is the oxidation number for zinc? How does zinc's electron configuration account for this oxidation number?

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Chemistry

Kali Martin

Which of the following experimental observations proved that the idea of matter and mass being evenly distributed in an atom was flawed?

A. Less than 1% of the alpha particles went un-deflected through the gold foil.

B. Less than 1% of the alpha particles were deflected by angles greater than 90°.

C. The beam from the negative electrode was deflected by electrically charged rods.

D. The beam from the negative electrode cast a shadow on the positive electrode.

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Chemistry

Ann Mitchell

Calculate the energy E of a sample of 3.50 mol of ideal oxygen gas (O2) molecules at a temperature of 310 K. Assume that the molecules are free to rotate and move in three dimensions, but ignore vibrations.

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Chemistry

Karlee Lyons

Gasohol is a fuel containing ethanol (c2h6o) that burns in oxygen (o2) to give carbon dioxide and water.

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Chemistry

Guest

What type of rock does the ocean floor consist of?

1 Igneous basalt rock

2 Igneous granite rock

3 Sedimentary rock

4 Metamorphic rock

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Chemistry

Ayana Luna

Consider the combustion of liquid methanol, ch3oh (l) : ch3oh (l) + 3/2o2 (g) →co2 (g) + 2h2o (l) δh=-726.5kj part a what is the enthalpy change for the reverse reaction?

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Chemistry

Judd

Type in the correct number for each question in the text box provided. Consider the synthesis of one molecule of glucose. How many molecules of ATP are required? How many molecules of NADPH are required? How many turns of the Calvin cycle are required?

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Chemistry

Jesus Carr

A steak is cooked on the grill. this is an example of a:

a. physical change.

b. chemical change.

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Chemistry

Mccullough

Which of the following is not a type of biomolecule?

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Chemistry

Gaven

What evidence led Thomson to propose that the mysterious negative particles he was studying were smaller than atoms?

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Chemistry

Stephen

Diluting concentrated 1.74M acetic acid to prepare 200 ml of 8M stick solution. What volume of concentrated acid must be used

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Chemistry

Aidan Martinez

Chemical equation for heat of formation of c25h52

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Chemistry

Shawn Bishop

At the end of the experiment, tell what happens to the balloon. You place a balloon in a closed chamber at standard temperature and pressure (STP). You double the chamber temperature while leaving the pressure constant.

A. It doubles in volume.

B. It decreases to one-half of its original volume.

C. It stays the same volume.

D. It expands to four times its original volume.

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Chemistry

Reyna

1. Which is the number of neutrons in 35 80 Br

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