Chemistry » Page 27

Chemistry

Nia Kerr

Part a how many grams of xef6 are required to react with 0.579 l of hydrogen gas at 6.46 atm and 45°c in the reaction shown below? xef6 (s) + 3 h2 (g) → xe (g) + 6 hf (g)

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Chemistry

Zane Yates

What can happen when tectonic plates move a few centimeters?

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Chemistry

Jessie Mccall

What might happen in a tropical rainforest biome if the area received very little rain for an extended period of time

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Chemistry

Nikolas Duffy

Suppose 0.274 mol of a gas occupy 6.62 l at a given temperature and pressure. what volume will 0.878 mol occupy at the same temperature and pressure?

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Chemistry

Patel

Peter and Jessica are both forensic scientists. Peter visits crime scenes to pr

the evidence collected by Peter. Which type of forensic scientists are Peter a

Peter is a

who visits visit a crime scene to gather evidence

further analyzes the evidence gathered by Peter.

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Chemistry

America Sandoval

1. Mitch weighs out 67 grams of potassium (K) to make a buffer. How many moles of potassium did Dr. Hellman weigh out?

2. Which statement is NOT true about a reaction rate?

Group of answer choices

Increases with increase in reactant concentration

Increases with increasing temperature

Is the speed at which product is formed

Is the rate at which reactant is used up

All of the answers are true

3. Which statement is NOT true about a catalyst?

Group of answer choices

Are not used up during a reaction

Increases the rate of the reaction

Lowers the energy of activation

Biological catalysts are called enzymes

Are used up during a reaction

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Chemistry

Guest

9,000,000 in scientific notation

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Chemistry

Jewel Holt

Ozone layer depletion causes

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Chemistry

Slinky

How many moles of nitrogen would react with excess hydrogen to produce 520 mL of ammonia?

0.0116mol

0.012mol

0.0232mol

0.024mol

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Chemistry

Terrence Schmidt

Which of the following has the greatest mass?

a. 1 mole of uranium (U)

b. 1 mole of oxygen (O)

c. 1 mole of sodium (Na)

.1 mole of chlorine (Cl)

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Chemistry

Ashlee Haynes

Unit conversions. (a) Convert 10,000 dynes to units of lbm ∙ ft/s^2 and lbf (b) Convert 0.2 atm to units of Kpa and lbf/in^2 (c) Convert 37 °C (physiological temperature) to units of °F and K. (d) Convert 50 in 2 ∙ lbm/s^2 units of joules and cal.

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Chemistry

Juliana

How can the temperature of a substance remain the same even if th substance is absorbing thermal energy?

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Chemistry

Kamila Preston

An inference is a prediction based on prior knowledge or experiences.

O

True

Or

False

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Chemistry

Senior

Plants use the sugars they produce during photosynthesis to create which macromolecules? A. lipids B. proteins C. nucleic acids D. carbohydrates

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Chemistry

Kayden Juarez

Hat information is needed to determine the energy of an electron in a many-electron atom?

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