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Natalka [10]
3 years ago
7

Type the correct answer in the box. Spell all words correctly. In which system are both energy and matter exchanged with the sur

roundings? In a(n) system both energy and matter are exchanged with the surroundings.
​

Chemistry
1 answer:
Anna11 [10]3 years ago
4 0

Answer:

open system

Explanation:

An open system is a system in which both energy and matter are exchanged with the surroundings.

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Which of these elements has an atom with the most stable outer electron configuration? * Cl Ca Ne Na
SashulF [63]

Answer:

Neon (Ne) has the most stable outer electron configuration because the outer electron is completely filled and it has octet structure

Explanation:

The configuration of these elements is as follows;

Cl₁₇ = 2, 8,7 (the outer electron is 7)

Ca₂₀ = 2,8,8,2 (the outer electron is 2)

Ne₁₀ = 2,8 (the outer electron is 8)

Na₁₁ = 2,8,1 (the outer electron is 1)

Based on the outer electron value above, Neon (Ne) has the most stable outer electron configuration because the outer electron is completely filled and it has octet structure.

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3 years ago
. A dough that is high in fat and sugar, and sometimes eggs.
murzikaleks [220]

Answer:

LEAN DOUGHS

Explanation:

A lean dough is a dough low in fat and sugar. Hard crust breads and rolls such as French and Italian breads and pizza crusts. Other white and whole wheat breads and dinner rolls. These are higher in fat and sugar and sometimes contain eggs and milk solids, because they are richer, they have a softer crust.

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3 years ago
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The autoignition of both ethanol and octane occurs at 363 oC. Which gas sample contains the gas molecules that have a greater av
USPshnik [31]

Answer:

See explanation

Explanation:

At the same temperature, the average kinetic energy of gases depends on the molecular mass of the gas. Hence,  given a particular temperature, lighter molecules travel faster on the average than heavier molecules.

Considering ethanol and octane, The molar mass of ethanol is 46.07 g/mol while the molar mass of octane is 114.23 g/mol. Hence, ethanol has a greater average kinetic energy than octane at the same temperature.

7 0
3 years ago
A double-blind study is one in which neither the researchers nor the subjects know wether the subject is receiving the real trea
TEA [102]

Answer:

A. Neither the subjects nor the researchers can bias the results.

Explanation:

As described, a double- blind study is one in which the researcher and his study does not know the person receiving the actual treatment.

Researchers can be bias in their studies as they seek to establish and fine tune results in the way the best favors them. A double-blind study helps to bridge this gap to prevent bias that might be introduced into an experimental set up or while interpreting results.

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Polysaccharides are simple sugars
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No polysaccharides are complex forms of  carbohydrate of long sugar molecules 
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