Chemistry » Page 14

Chemistry

Matey

A water sample from a hot thermal vent contained a single-celled organism that had a cell wall but lacked a nucleus. What is its most likely classification?

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Chemistry

Marcos Horne

3. What

Why are high-altitude weather balloo

inly partially filled when they are launched

with flying?

OER PS

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Chemistry

Nancy Marshall

Determine the number of centiliters in 2.4 x 10^3 milliliters.

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Chemistry

Chef

What is the hybridization of bromine in BrO2-?

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Chemistry

Moshe

A person touch a large chunk of ice with their hands and remarks. this is making me cold explain wat this person felling. is the ice transferringcold to the person is there a heat transfer occuring? explain

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Chemistry

Kayden Barton

When atoms react they form a chemical bond which is defined as

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Chemistry

Boston Shepherd

Describe the difference between the terms "mass number" and "atomic mass".

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Chemistry

Walsh

Do you think that crocodiles share a common ancestor with birds, dolphins and dogs

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Chemistry

Ruben Ryan

If an atom has 28 protons and 29 neutrons, what is the mass?

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Chemistry

Karilyn

Aqueous concentrated nitric acid is 69% HNO3 by weight and has a density of 1.42 g/mL. What is the molarity of this solution?

What is the molality of the solution?

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Chemistry

Myles Mccann

As the elements in Group 17 are considered in order of increasing atomic number, the chemical reactivity of each successive element

(1) decreases

(2) increases

(3) remains the same

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Chemistry

Jayson Clements

What is the concentration of an acid with a pH of 2?

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Chemistry

Andy Yates

g Assuming that the specific heat of the solution is 4.18 J / (g⋅∘C), that its density is 1.00 g/mL, and that the calorimeter itself absorbs a negligible amount of heat, calculate ΔH in kilojoules for the reaction. H2SO4 (aq) + 2NaOH→2H2O (l) + Na2SO4 (aq) Express your answer using two significant figures.

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Chemistry

Lorenzo Bowman

Calculate the percent ionization of 0.0075 m butanoic acid (ka = 1.5 x 10-5) in a solution containing 0.085 m sodium butanoate.

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Chemistry

Dominic Michael

A gas has a volume of 5.0 L at a pressure of 50 KPa. What happens to the volume when the pressure is increased to 125?

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