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Anna [14]
3 years ago
15

Which is greater 0.99 or 0.1

Mathematics
1 answer:
aev [14]3 years ago
8 0
0.99 is the answer it greater than 0.1
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Show your work on a separate sheet of paper then choose one answer choice.<br> 5x - 7 = 4x - 1?
Anestetic [448]

Answer:

x= 6

Step-by-step explanation:

Isolate all variables on their own and numbers on the other

5x -4x +7-7  = -1 +7 +4x -4x

5x -4x = -1+7

Solve for x

x = 6

8 0
3 years ago
Which of the following represents a 1.00 M (M = mol/dm3) aqueous solution of glucose (C6H12O6)?
tino4ka555 [31]

Answer:

Option C. 90.0 g glucose per 500 cm3 water

Step-by-step explanation:

1.00 M (mol/dm3) aqueous solution of glucose (C6H12O6) means that 1 mole of glucose is dissolved in 1dm³ (1000cm³) of water.

The concentration of a substance is defined as the mole of solute per unit volume of solvent (water) in dm³.

Option A is wrong since it state: 180g of C6H12O6 per 1000cm³ of solution. Concentration is always expressed as per 1000cm³ or dm³ of water.

For option B:

We shall determine the number of mole of C6H12O6, followed by the concentration.

This is illustrated below:

Molar mass of C6H12O6 = (12x6) + (12x1) + (16x6) = 180g/mol

Mass of C6H12O6 = 10g

Mole = Mass /Molar Mass

Mole of C6H12O6 = 10/180 = 0.056 mole.

Volume of water = 10cm³ = 10/1000 = 0.01dm³

Concentration = mole /Volume

Concentration = 0.056/0.01 = 5.6mol/dm³

Option B is wrong

For option C:

We shall determine the number of mole of C6H12O6, followed by the concentration.

This is illustrated below:

Molar mass of C6H12O6 = 180g/mol

Mass of C6H12O6 = 90g

Mole = Mass /Molar Mass

Mole of C6H12O6 = 90/180 = 0.5mole

Volume of water = 10cm³ = 500/1000 = 0.5dm³

Concentration = mole /Volume

Concentration = 0.5/0.5 = 1mol/dm³

Option C is correct.

For option D is wrong as well as it states 0.1g of C6H12O6 per cm³ of solution. Concentration is always per 1000cm³ or dm³ of water.

From the above illustrations, option C is the correct answer.

7 0
3 years ago
Find the volume of this cylinder
Neporo4naja [7]

Answer:

Volume of the cylinder :---

Volume = \pi \times{(radius)}^{2} \times  height \\   = \frac{22}{7}  \times 5 \times 5 \times 10 \\  = \boxed{785.4 \: c {m}^{3}}

<h3><u>B. 785 cm^3</u> is the right answer.</h3>
8 0
3 years ago
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Evaluate the expression for the given value of the variable: <br> PLEASE HELP
Shalnov [3]

Answer:

The question is wether for the first positive value we consider (-4)×(-2) or -4×(-2)

5 0
3 years ago
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Ann has some dimes and quarters. If she has 13 coins worth a total of $2.50, how many of each type of
Mashutka [201]

Answer:

5 dimes and 8 quarters

Step-by-step explanation:

4 0
3 years ago
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