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
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Questions in Chemistry
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
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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
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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 …
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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 …
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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
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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 …
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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
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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?
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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. …
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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. …
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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 …
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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
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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 …
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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
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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
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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.
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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
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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. …
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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?
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the health codes cover all issues except food handlers
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if you are given the assignment to cut raw poultry
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how many chlorine molecules are in 6.5 moles of chlorine
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chromium metal is immersed in an aqueous solution of cobalt(ii) chloride.
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the reaction between aluminium powder and anhydrous barium nitrate
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which pair of elements is most apt to form a molecular compound with each other?
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lewis acids and bases are most closely associated with which process?
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using the black numbers on the stopwatch to answer the questions. what is the most accurate reading of seconds as indicated by the long second hand? look at the divisions between 2 and 4. what level of precision does this stopwatch have based on the divisions marked on its face?
Questioned by maham237 @ in Chemistry viewed by 302 persons