Chemistry » Page 61

Chemistry

Marcel

The diving velocity of a falcon can reach 322 km/hr. If the falcon maintains this velocity for 7.2 seconds (0.002 hours), what will the displacement of the falcon be

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Chemistry

Chaz

How many neutrons does europium - 151 have? What's is the isotopes mass number?

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Chemistry

Arias

How many molecules are in 3.55 miles of Aluminum Sulphate

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Chemistry

Elliot Arias

A flexible container has a volume of 22.5 liters when there is 1.00 moles of gas in it at STP. Determine the number of miles of gas that must be contained if the volume is increased to 30.0 liters.

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Chemistry

Haiden Church

The density of aluminum is 2.70g/mL. What is the volume in mL of 74.5 grams of aluminum?

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Chemistry

Haley

How many atoms are in 5 moles of sulfur

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Chemistry

Julianna Hansen

Two metal samples, X and Z, of the same mass and initially at 25.0 degrees Celsius, are heated so that each metal receives the same amount of thermal energy. Which metal will have the highest final temperature? Specific heat capacity of X = 0.350 J/g⁰C and specific heat of Z = 0.895 J/g⁰C

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Chemistry

Solomon Mccullough

Often atoms join so that each atom will have

a. an even number of electrons.

b. an outermost energy level that is full of electrons.

c. an equal number of protons and neutrons

d. more electrons than either protons or neutrons

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Chemistry

Cody

In this lab experiment, you will react copper (II) chloride and aluminum. You will look for clues as to which substance was in excess and which limited the reaction. Write an investigative question that describes the scientific goals of this experiment. Make sure that your question applies to any reaction.

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Chemistry

Rachel

What is Energy that is transferred by electromagnetic waves called

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Chemistry

Guest

Substance a has a density of 3.0 g/cm3 and substance b has a density of 4.0 g/cm3. in order to obtain equal masses of these two substances, the ratio of the volume of a to the volume of b will be equal to

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Chemistry

Selina Harper

Calculate the mass (in grams) of cobalt that has the same number of atoms as 521 mg of silicon.

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Chemistry

Jakob Allison

You spill a little bit of olive oil on your hands. You wash off the oil with soap and water. How does the soap get the oil off your hands?

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Chemistry

Nico Bush

Which statement best describes position of the Earth in the Solar System?

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Chemistry

Dallas Lewis

Which best describes a swimming pool?

1.) it is a solute

2.) it is a solvent

3.) it is a solution

4.) it is a reactant

5.) it is a product

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