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Chemistry

Without doing any calculations, which transition in the hydrogen atom has the shortest wavelength?

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Chemistry

You are in a car at a stop sign the car accelerates from 0 to45mph in 4 seconds what is ur cars acceleration

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Chemistry

A scientist is studying the natural feeding habits of tigers.

In order to obtain the best data, which approach should the scientist use?

A. perform tests in the laboratory

B. observe tigers in the zoo

C. observe tigers in the wild

D. set up controlled experiments

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Chemistry

What is copper (ii) reacts with iodine products balanced equation

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Chemistry

Instructions:Select the correct answer.

Refer to the activity series chart and determine which of the following displacement reactions can occur.

2Ag (s) + Zn (NO3) 2 (aq) → 2AgNO3 (aq) + Zn (s)

2Cu (NO3) 2 (aq) + 2Ag (s) → 2AgNO3 (aq) + Cu (s)

CuSO4 (aq) + Fe (s) → FeSO4 (aq) + Cu (s)

3MgSO4 (aq) + 2Al (s) → Al2 (SO4) 3 (aq) + 3Mg (s)

plato learning

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Chemistry

Calculate how many grams of o2 (g) can be produced from heating 87.4 grams of kclo3 (s).

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Chemistry

Which of the following statements about the nucleus is false?

A. Able to be lost or gained in chemical reactions.

B. Contains nearly all of the mass of the atom.

C. Made up of protons an neutrons.

D. None of these

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Chemistry

All Organisms the energy to function. Which cell organelle provides this energy?

A. Nucleus

B. Ribosomes

C. Chloroplast

D. Vesicle

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Chemistry

Where can membrane proteins be located? a. entirely within the membrane b. on the surface of the membrane c. in either position d. The position of membrane proteins has never been determined

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Chemistry

1. (a) What are the possible interactions

between two charged objects?

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Chemistry

You are given a substance that is equally soluble in water and hexane, what is the kd

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Chemistry

How might you explain the difference between the pH values of the 0.01 M HCl (pH = 1.1) and the 0.01 M HC2H3O2 (pH = 3.6) ?

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Chemistry

Copper has a density of 8.96 g/cm3. what is the volume of a copper block that has a mass of 45.0 g? hint: you have to rearrange the density equation to solve for volume. 0.199 cm3 5.02 cm3 5.02 g/cm3 403 cm3

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Chemistry

For the following reaction, KP = 0.455 at 945°C: At equilibrium, is 1.78 atm. What is the equilibrium partial pressure of CH4 in atm?

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Chemistry

The heat of fusion for water is the amount of energy needed for water to

a. freeze.

b. boil.

c. melt.

d. evaporate.

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