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Korvikt [17]
3 years ago
13

The given graduated cylinder is calibrated in

Chemistry
2 answers:
Marina CMI [18]3 years ago
8 0

Answer : The volume of liquid in graduated cylinder is 26.5 mL.

Explanation :

As we know that for the measurement of the volume of liquid in graduated cylinder are shown by placing the graduated cylinder on the flat surface and then view the height of the liquid in the graduated cylinder with the naked eyes directly level with the liquid.

The liquid will tend to curve downward that means this curve is known as the meniscus.

In the case of colored liquid, we are always read the upper meniscus of the liquid for the measurement.

In the case of colorless liquid, we are always read the lower meniscus of the liquid for the measurement.

In the given image, there are 10 division between the 20 and 30 and the solution is colorless. So, we will read the lower meniscus of the liquid for the measurement.

Hence, the volume of liquid in graduated cylinder is 26.5 mL.

matrenka [14]3 years ago
5 0

Answer: 26mL

Explanation:

You always need to see the meniscus of the liquid, (which is the curved figure in the liquid) in the cylinder, also, the question is telling you that write the correct number of significant figures, as the cylinder does not point at any decimal number, you cannot tell if it is on 26.1 or 26.9, you can be certain, only, that is 26 mL.

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C & D, clouds are apart of the Hydro and Atmosphere!
5 0
3 years ago
When 2.5 mol of O2 are consumed in their reaction, ________ mol of CO2 are produced
Vika [28.1K]

The given question is incomplete. The complete question is:

The combustion of propane (C3H8) in the presence of excess oxygen yields CO_2 and H_2O

C_3H_8(g)+5O_2 (g)\rightarrow 3CO_2(g)+4H_2O (g)

When only 2.5 mol of O_2 are consumed in order to complete the reaction, ________ mol of CO_2 are produced.

Answer: Thus when 2.5 mol of O_2 are consumed in their reaction,  1.5 mol of CO_2 are produced

Explanation:

The balanced chemical equation is:

C_3H_8(g)+5O_2 (g)\rightarrow 3CO_2(g)+4H_2O (g)

According to stoichiometry :

5 moles of O_2 produce = 3 moles of  CO_2

Thus 2.5 moles of O_2 will produce = \frac{3}{5}\times 2.5=1.5 moles of  CO_2

Thus when 2.5 mol of O_2 are consumed in their reaction,  1.5 mol of CO_2 are produced

4 0
3 years ago
A base has Kb of 2.5 x 10-11. which of the following statements is true?(1 point)
Furkat [3]
I disagree with the answer pick of D. If you have a neutral pH 7 solution and you proceed to add a base even with an relatively insignificantly low Kb your solution would still be more basic then acidic. The answer should be b which is true that the base only ionizes slightly in aqueous solution. This is also truer to the definition of what Kb represents.
3 0
3 years ago
"Chilling" is most commonly practiced by:
zimovet [89]
Answer: Food production industry
Explanation: 
Cooling is a process used mainly to reduce the temperature of food to either enter a different process or for storage purposes.
The temperature reached by the cooling process is usually between -1 and 8 degrees celcius.
4 0
3 years ago
The number of grams per mole of something is also known as_______
Sergeeva-Olga [200]

Answer:

Molar mass

Explanation:

This is a counting unit which represents the mass in grams of a substance that make up one mole of the substance. This mass is calculated as follows:

Molar mass = Mass/ Number of moles

Units: grams/mol

5 0
3 years ago
Read 2 more answers
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