Glucose is an important sugar in many biochemical reactions what is the molarity of a solution that contains 500 grams of glucose (molecular weight= 180.16 g/mol) in 7.02 liters of solutiona. .56M
b. .78 M
c. 3.85 M
b. 4.98 M
Answers
Answer:
The correct answer is c.
Explanation:
First, look for the same problem to verify that the correct volume is 0.702 L.
Now we must calculate the amount of glucose moles (n) in the 500g:
n =
n = 2,7 mol
Molarity is given by moles of compound per liter. In this way, we calculate the molarity (M) as:
M =
M =
Have a nice day!
500 / 180.16 => 2.775 moles
Volume = 0.72 L
M = n / V
M = 2.775 / 0.72
M = 3.85 M
hope this helps!
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O A. 2K+ + OH + H2SO4 → OH + 2H+ + K2SO4
B. OH + 2H+ + 2H20()
C. 2KOH + H2SO4 → 2H20 + K2SO4
D. 2K+ + OH + 2H+ + SO42- → 2H20() + 2K+ + SO42-
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Answers
Answer:
The answer is "Option D".
Explanation:
The entire ionic equation for all the substances, which are ionic compounds but are available in an aquatic is represented in the form with ions in the full ionic equation.
In the Net ionic equation, it doesn't have the particulate matter throughout the net ionic equations throughout the equations.
In the Spectator ions, it doesn't participate in interactions mostly on reaction and the material hand. From both sides, the very same ions are present.
The evenly balanced chemical formula is,
It is the separate organic compound that full ion formula will match the choice D.
Final answer:
The complete ionic equation for the reaction is 2K+ + 2OH- + 2H+ + SO42- → 2H2O + 2K+ + SO42-.
Explanation:
The complete ionic equation for the reaction 2KOH(aq) + H2SO4(aq) → 2H20(l) + K2SO4(aq) is:
2K+ + 2 OH- + 2 H+ + SO42- → 2 H2O(l) + 2 K+ + SO42-
The equation is balanced in terms of mass and charge by adding spectator ions (K+ and SO42-). The net ionic equation can be obtained by eliminating the spectator ions, leaving only the species that undergo a chemical change.
Learn more about Complete ionic equation here:
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Answers
Answer:
Noble gas
Explanation:
With the exception of helium, all elements in Group 18 contain 8 electrons in the outermost shell; these are the noble gases.
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Answer:
The atomic mass is the weighted average of all the naturally occurring isotopes of the element.
Explanation:
A. The atomic mass is the weighted average of all the naturally occurring isotopes of the element. YES. Since there can be several different isotopes of the same element, the weighted average is used in the periodic table to reflect the likely composition of a random sample.
B. The atomic mass is determined by the number of protons in the nucleus. NO
C. The atomic mass is a whole number, but it appears as a fraction due to rounding in the periodic table. NO.
D. The atomic mass is a decimal number because it represents the total number of electrons in the atom. NO.
Which statements accurately describe volume? Check all that apply.
Answers
Answer:
Volume is a physical property of an object
One unit of volume is the milliliter
Liquids and solids have constant volumes
Explanation:
Explanation:
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An object in motion stays in motion unless acted on by an outside force.
An object at rest will stay at rest.
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Having a heavier mass may increase the force of a moving object.
29
Which of the following is not an example of friction?
Pouring water off a bridge and watching it turn to small drops by the time it hits the ground.
A wrecking ball swinging towards its target.
A piece of ice dropping into a glass of water that sinks more slowly than it fell through the air.
Smoothing an ice rink with a Zamboni.
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What three quantities are involved with the Second Law of Motion?
acceleration, gravity, inertia
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mass, gravity, acceleration
acceleration, force, mass
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it is stopped
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Both B and C could be true
Answers
C
D
C
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