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9966 [12]
3 years ago
10

An 80 cm³ sample of air is trapped in a syringe. The air is slowly passed over heated iron in a tube until there is no further d

ecrease in volume.When cooled to the original temperature, which volume of gas remains? A 80 cm³ B 64 cm³ C 20 cm³ D 16 cm³​
Chemistry
1 answer:
Naddik [55]3 years ago
3 0

Answer:Serkan teacher regularly buys 75 TL of gasoline in his car every week.

At the end of the 13th week, how much is the total gasoline expenditure made by the serkan teacher?

A)390 B)420 C)900 D)975

Explanation:

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When looking at Newman projections are there instances where the staggered confirmation is not the lowest in energy? Explain you
stiks02 [169]

Answer:

let's summarize the caution as we are given with human projection. We have to tell them stances where staggered confirmation is not the lowest in energy. Okay, so let's see that. Are there any instances that which conforms tiger is not the lowest energy. Okay, so the lowest energy is what then happened? The lowest in energy already happens on living. Honestly, when, when it happens the lowest in energy only happens when the bulky groups are at 1 80 degree with each other. When it happens when bulky, bulky, bulky groups are at 1 80 degree. Okay, When they are, for example, when the bulky groups are in this way At 180°, then it is Louis Why? Because repulsion are very less repulsion very less. Got it. So we have to tell when it is not the lowest so far not the lowest instance. These bulky groups should be together. So if they either make of angle of 60° or 300° together, suppose this is a bulky group one and this is a bulky group two and okay, so if it makes a 60 degree or 300 degree then this um have the highest energy Or has the energy is not lowest in it. Why? It is not lowest in it Because at 300° or 60°. Why? Because the pulsations are very high repulsion. Are you ready? Hi. So by looking at the humans projection we can conclude that when the if the bulky group parrot 1, 80 degree be considered as the lowest energy. And if they are at 300 or 60 degree or close to each other, republicans are higher and they are not in lowest energy.

7 0
2 years ago
Synthetic reactions in Citric Acid Cycle
Molodets [167]

<em>★</em><em> </em><em>«</em><em> </em><em><u>Synthetic reactions in Citric Acid Cycle</u></em><em><u> </u></em><em>»</em><em> </em><em>★</em>

  • <em>The overall reaction for the citric acid cycle is as follows: acetyl-CoA + 3 NAD+ + FAD + GDP + P + 2H2O = CoA-SH + 3NADH + FADH2 + 3H+ + GTP + 2CO2. </em>

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<em>hope</em><em> </em><em>it</em><em> is</em>

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3 years ago
Anything that takes up space and has mass is
Brilliant_brown [7]
The answer is matter. This is explained in many books and theories.
5 0
3 years ago
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What is the number of valence electrons in potassium?
Liono4ka [1.6K]
1 or 8 i believe would be the answer
7 0
4 years ago
Which of the following properties describe all matter?
Sergio [31]

Answer:

Here is a bunch of info from my lesson to help you out...

Explanation:

All matter has physical and chemical properties. Physical properties are characteristics that scientists can measure without changing the composition of the sample under study, such as mass, color, and volume (the amount of space occupied by a sample). Chemical properties describe the characteristic ability of a substance to react to form new substances; they include its flammability and susceptibility to corrosion. All samples of a pure substance have the same chemical and physical properties. For example, pure copper is always a reddish-brown solid (a physical property) and always dissolves in dilute nitric acid to produce a blue solution and a brown gas (a chemical property).

Physical properties can be extensive or intensive. Extensive properties vary with the amount of the substance and include mass, weight, and volume. Intensive properties, in contrast, do not depend on the amount of the substance; they include color, melting point, boiling point, electrical conductivity, and physical state at a given temperature. For example, elemental sulfur is a yellow crystalline solid that does not conduct electricity and has a melting point of 115.2 °C, no matter what amount is examined (Figure 1.3.1

1.3.

1

). Scientists commonly measure intensive properties to determine a substance’s identity, whereas extensive properties convey information about the amount of the substance in a sample.

7 0
3 years ago
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