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3 years ago

To save on heating bills, do you think the roof of a building should be lined with

Chemistry

2 answers:

iren2701 [21]3 years ago

6 0

Answer:

2. a thermal insulator

Explanation:

To save on heating bills, the roof of a building should be lined with a thermal insulator.

A thermal insulator will help prevent the house from loosing the heat trapped within the house.

An insulator is a substance or device that does not allow for the conduction of heat and electricity.
In this problem, an insulator does not allow for heat conduction.
A conductor will allow heat pass through readily.
So, to trap heat within the house, an insulator is best used.

bekas [8.4K]3 years ago

4 0

A thermal insulator because it would keep the heat in

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Ralph conducted an experiment to study the effect of temperature change on the heart rate of

Irina-Kira [14]

Answer:

c. Ralph's classmate observing Daphnia in water at 30oC, 32oC and 34oC

Explanation:

When we talk about replication, we actually mean, repetition of a scientific procedure carried out by another scientist and obtaining the same results as he/she previously did.

Replication is carried out under identical conditions as the first scientist did. If Ralph's classmate wants to replicate Ralph's work, then identical temperature conditions of 30oC, 32oC and 34oC must be used, hence the answer above.

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3 years ago

What volume would 8.01×1022 molecules of an ideal gas occupy at STP?

Nataly_w [17]

Explanation:

$8.01 \times {10}^{22} \times \frac{1}{6.02 \times {10}^{23} } \times \frac{22.4}{1} = 2.9804$

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3 years ago

What name would you give to an orange smelling ester formed by adding octanol to acetic acid

Iteru [2.4K]

The name of the ester is octyl acetate.

Explanation:

Octanol will react with the acetic acid to form octyl acetate. You may find the structure of the compounds in the attached picture.

Learn more about:

structure of organic compounds

brainly.com/question/14122960

#learnwithBrainly

4 0

3 years ago

What is cerium’s common molecule name?

antiseptic1488 [7]

Answer:lanthanides is the answer and here is a picture for proof

Explanation:

7 0

3 years ago

Explain this method (Froth floatation method)..........

Svetach [21]

Answer:

froth flotation is a technique commonly used in the mining industry. In this technique, particles of interest are physically separated from a liquid phase as a result of differences in the ability of air bubbles to selectively adhere to the surface of the particles, based upon their hydrophobicity.

Explanation:

Froth floatation method is commonly used to concentrate sulphide ore such as galena (PbS), zinc blende (ZnS) etc. (ii) In this method, the metaalic ore particles which are perferentially wetted by oil can be separated from gangue. (iii) In this method, the crushed ore is suspended in water and mixed with frothing agent such as pine oil, eucalyptus oil etc. (iv) A small quantity of sodium ethyl xanthate which act as a collector is also added. (v) A froth is generated by blowing air through this mixture. (vi) The collector molecules attach to the ore particles and make them water repellent. (vii) As a result, ore parrticles, wetted by the oil, rise to the surface along with the froth. (viii) The froth is skimmed off and dried to recover the concentration ore. (ix) The gangue particles that are preferentially wetted by water settle at the bottom.

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2 years ago