Questions in Chemistry

How many meters per second is the speed of light

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The speed of light is 1.86×10^5 miles per second.how many meters will light travel in 1.0 seconds

What is the molar mass of iron ii sulfate feso4

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What mass of FeSO4^2- x 6H20 (Molar Mass=260g/mol) is required to produce 500 mL of a .10M iron (II) sulfate solution. A.) 9g B.) 13g C.) 36g D.) 72g

Combustion of gasoline in a car engine exothermic or endothermic

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The burning of gasoline in an automobile engine is an example of a(n) _____. Select one: a. reversible reaction b. photosynthesis reaction c. endothermic reaction d. exothermic reaction

An acid that ionizes almost completely in solution is a

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Strong acids are those that ionizes almost completely in water. to be considered a strong acid, an acid must have an acid ionization constant ka > 55. the strong acid hcl …

Isotopes of the same element have the same mass number

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All isotopes of an element have the same number of neutrons. have the same number of protons. have the same atomic number. have the same mass number. have different chemical …

Which planet takes the longest time to orbit the sun

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Which planet will take the longest amount of time to orbit the sun? A. Jupiter B. Mars C. Mercury D. Uranus

What determines the intensity of the color of a solution

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g What happens to the intensity of the solution's color as the concentration of the solute changes? The intensity of the color directly changes in response to the concentration. The …

Temperature as the average kinetic energy of a gas increases

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the average kinetic energy of the particles in a gas increases as the temperature of the gas increases. explain​

What is the mass of 1 mole of fluorine gas

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Fluorine gas consists of diatomic molecules of fluorine (F2). How many molecules of fluorine are in one mole of fluorine?

One of the main disadvantages of being an endotherm is

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This rabbit lives where it gets very cold in the winter. It does this easily because it is an endotherm. Being an endotherm or warm-blooded has its advantages and disadvantages. …

Solve the following problems express your answers in scientific notation

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4. Express the answers to the following problems in scientific notation. Hint: Use the subtraction example to solve the addition problem. A. (1.8 X 1020) X (2.5 X 10^16) C. …

How does the muscular system interact with the digestive system

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How do the muscular system and digestive system relate to one another? Question 1 options: If your body needs more food, and you cannot eat. the muscular system helps the …

Of the following which atom has the smallest atomic radius

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Choose the atom that has the smallest atomic radius. Na Li K Rb

Which of the following molecules has the highest boiling point

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Using what you know about intermolecular forces, determine which of the following molecules has the highest boiling point. Using what you know about intermolecular forces, determine which of the following …

What are the four basic needs of all living things

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All living things have four basic needs to live and function. List these four needs. HELP ASAP

An insoluble solid produced by a chemical reaction in solution

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An insoluble solid produced by a chemical reaction in solution is called

The electromagnetic waves that have the lowest frequencies are called

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The electromagnetic waves that have the lowest frequencies are called a. radio waves. c. ultraviolet waves. b. microwaves. d. x-rays.

What do isotopes of the same element have in common

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What do all isotopes of the same element have in common? atomic mass chemical stability number of neutrons number of protons

What happens when a ray of light hits a mirror

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Which explanation is true about what happens to a ray of light when it strikes a mirror? A. A light ray is transmitted toward a mirror at a certain angle. …

How to find the amount of neutrons in an element

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How can you calculate the number of neutrons in an atom?

Most viewed questions in Chemistry


Convert 8.00 x 10 20 molecules of h2 to moles

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Which of the following is true about subatomic particles

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An oxidation reduction reaction that is also a synthesis reaction

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A solution that contains 70g of nano3 at 30 c

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Arrange the following elements in order of decreasing ionization energy

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A vitamin c tablet containing 250 mg of ascorbic acid

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