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scoundrel [369]
3 years ago
5

If the smallest markings on a ruler are one tenth (1/10) of a centimeter, which of the following measurements could be recorded

using that ruler?
A. 2.5 cm
B. 2.52 cm
C. 2.520 cm
D. 2.5200 cm
Chemistry
2 answers:
makkiz [27]3 years ago
4 0
I think it should be A 
Alenkinab [10]3 years ago
4 0

Answer:

The correct answer is the option: A. 2.5 cm

Explanation:

Hello! Let's solve this!

In a rule we see that it is divided into centimeters, they can be 15 centimeters, 20 centimeters, etc.

It is very easy to see the two centimeters, which are the largest lines. To see after two, we count the smallest stripes and we can reach 2.5 centimeters. But no more than that.

We conclude that the correct answer is the option: A. 2.5 cm

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What determines the strength of a solute as an electrolyte?
timama [110]
<span>Solutes become electrolytes by ionizing. Ionic compounds therefore make good electrolytes; covalent compounds don't.</span>
8 0
3 years ago
A liquid solvent is added to a flask containing an insoluble solid. The total volume of the solid and liquid together is 93.0 mL
shutvik [7]

Answer:

Mass of solid = 189.141 gram

Explanation:

Given:

Total volume = 93 ml

Mass of liquid = 33.7 gram

Density of liquid = 0.865 g/ml

Density of solid = 3.50 g/ml

Find:

Mass of solid = ?

Computation:

Volume of liquid = Mass of liquid / Density of liquid

Volume of liquid = 33.7 / 0.865

Volume of liquid = 38.9595 ml

Volume of solid = Total volume - Volume of liquid

Volume of solid = 93 - 38.9595

Volume of solid = 54.0405 ml

Mass of solid = Volume of solid × Density of solid

Mass of solid = 54.0405 ml × 3.50 g/ml

Mass of solid = 189.141 gram

7 0
3 years ago
Please help!!!
Strike441 [17]

Answer:

The above reaction is an example of <u>alcoholic fermentation</u>.

Explanation:

In alcoholic fermentation, one mole of glucose gets converted into two moles of alcohol, two moles of carbon dioxide and two moles of adenosine tri-phosphate (ATP).

5 0
2 years ago
The amount of energy that must be absorbed or lost to raise or lower the temperature of 1 g of liquid water by 1°C _____. See Co
Klio2033 [76]

Answer:

Specific heat capacity

Explanation:

Heat capacity is defined as amount of the heat supplied or absorbed by the given mass of the material so to make a unit change in the material's temperature.

The SI unit is Joule / kelvin (J/K).

It is an extensive property.  

While,  

<u>Specific heat capacity is the amount of heat absorbed or lost by one gram of mass of the substance to raise it's temperature by 1°C or 1 K </u>

<u>It is an intensive property. </u>

4 0
3 years ago
1. Which sample contains a total of 9.0 * 10 ^ 23 atoms ? A) 0.50 mole of HCI B) 0.75 mole of H 2 O C) 1.5 moles of Cu D) 1.5 mo
Alchen [17]

c. 1.5 moles of Cu will contain a total of 9.0 * 10 ^ 23 atoms.

Explanation:

To convert moles into atoms,  the molar amount and number of atom is multiplied by Avagadro's number.

Avagadro's number is 6.022×10^{23}  

So applying the formula in the given sample:

A) 0.5×6.022×10^{23}

   3.01×10^{23} atoms.

B) 0.75 mole of H20

O.75×6.022×10^{23}

= 4.5166×10^{23}  atoms.

C) 1.5 moles of Cu

  1.5×6.022×10^{23}

  =  9.033×10^{23}

D). 1.5 moles of H2

1.5 × 2 × 6.022 × 10^{23}

= 18.066 × 10^{23} atoms   because H2 is 2 moles of hydrogen.

Atom is the smallest entity of matter having property of the element to which it is a part.

8 0
2 years ago
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