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mars1129 [50]
3 years ago
7

5. There are several items in a graduated cylinder. Given are the densities. What order

Chemistry
1 answer:
givi [52]3 years ago
4 0

Answer:

The order of items in the graduated cylinder from top to bottom will be -:

Bamboo, Gasoline, Water, Ebony, Mercury

Explanation:

• Density is known as mass per unit volume.

\[\text{Density}=\frac{\text{mass}}{\text{volume}}\]

• Substance with lower density will float on the top of substance with higher density.

• Order of density of the items in graduated cylinder is -:

Mercury > Ebony > Water > Gasoline > Bamboo

• Bamboo \[\left( 0.40g/ml \right)\] has the least density i.e. it will be on the top of all the items present in the graduated cylinder.

• Mercury \[\left( 13.6g/ml \right)\] has the highest density i.e. it will be at the bottom of all the items present in the graduated cylinder.

• Thus, the order of items in graduated cylinder will be in order of increasing density  -:

Bamboo, Gasoline, Water, Ebony, Mercury

Learn more about density here:

brainly.com/question/24323975

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High-temperature superconducting oxides hold great promise in the utility, transportation, and computer industries.
koban [17]

The main class of high-temperature superconductors are in the class of copper oxides (only some particular copper oxides) especially the Rare-earth barium copper oxides (REBCOs) such as Yttrium barium copper oxide (YBCO).

<h3>What superconducting material works with the highest temperature?</h3>

As of 2020, the material with the highest accepted superconducting temperature is an extremely pressurized carbonaceous sulfur hydride with a critical transition temperature of +15°C at 267 GPa.

<h3>How do high-temperature superconductors work?</h3>

High-temperature superconductivity, the ability of certain materials to conduct electricity with zero electrical resistance at temperatures above the boiling point of liquid nitrogen, was unexpectedly discovered in copper oxide (cuprate) materials in 1987.

Learn more about high temperature superconductors here:

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6 0
2 years ago
What is 3.5x10^2 x 8.0x10^-2 in scientific notation
docker41 [41]
Scientific notation is defined as writing a number between 0 to 10 multiplied by a power of 10
3.5 x 10² x 8.0 x 10⁻²
when we solve the equation 
answer - 28 
to write in scientific notation the decimal point should come after the first digit from the right. to bring the decimal point from after digit 8 to after digit 2, we have to move one decimal place to the left. then we get 2.8, to get the value as 28 we have to multiply 2.8 by 10
therefore answer is 
2.8 x 10¹
6 0
3 years ago
Calculate the mass of water produced when 1.36 g of butane reacts with excess oxygen.
ANTONII [103]

Answer:

Mass of water produced= 1.8 g

Explanation:

Given data:

Mass of water produced = ?

Mass of butane = 1.36 g

Mass of oxygen = excess

Solution:

Chemical equation:

2C₄H₁₀ +13 O₂       →   8CO₂ + 10H₂O

Number of moles of butane:

Number of moles = mass/molar mass

Number of moles = 1.36 g/ 58.12 g/mol

Number of moles = 0.02 mol

Now we will compare the moles of butane with water.

                 C₄H₁₀         :        H₂O

                  2              :           10

                 0.02          :         10/2×0.02 = 0.1 mol

Mass of water produced:

Mass = molar mass × molar mass

Mass = 0.1 mol × 18 g/mol

Mass = 1.8 g

6 0
3 years ago
Use the diagram to answer each question.
Naya [18.7K]

Answer:

84g Thus, 84g of KNO3 must be dissolve in 100 grams of water to form a saturated solution at 50 oC.

and 136 of KNO3 must be dissolve in 100 grams of water to form a saturated solution at 70 oC.

Explanation:

4 0
3 years ago
Explain how a redox reacation involves electrons in the same way that a neutralization reaction involves protons
lidiya [134]
For the neutralization process: an acid acts as a donor and donates protons to the base. On the other hand, the base acts as an acceptor and accepts the transferred protons. In a nutshell, neutralization is mainly proton transfer process.

As for the redox process: the oxidized material usually transfers electrons to the reduced material. In a nutshell, redox is mainly electron transfer process.
8 0
3 years ago
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