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ivolga24 [154]
4 years ago
15

What does D represent?

Chemistry
1 answer:
alexandr1967 [171]4 years ago
3 0

Answer:

the lowest point of energy the the graph reaches

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Why do we study heat in a chemistry course?
Gwar [14]

Answer:

Explanation:

The human body is constantly radiating heat to its surroundings, and human comfort is closely tied to the rate of this radiation we need to know this because its part of a daily life.

8 0
3 years ago
When collecting a gas over water, the gas is always a mixture of the gas collected and water vapor. question 5 options:
Lunna [17]

When collecting gas over water, the gas is always a mixture of the gas collected and water vapor. This statement is true.

The gaseous phase of water is known as water vapor or aqueous vapor. Within the hydrosphere, it is one type of water state. Water vapor can be created by the boiling or evaporation of liquid water as well as by the sublimation of ice. Like the majority of other atmospheric elements, water vapor is transparent. The mist that hovers above a saucepan of boiling water is an illustration of water vapor.

Gaseous water, particularly when it is distributed in the atmosphere. Steam. The most frequent greenhouse gas is water vapor. It contributes to around half of the planet's warming. It absorbs heat that is projected upward from the earth while letting practically all sunlight reach the planet's surface like other greenhouse gases do.

To learn more about water vapor please visit -
brainly.com/question/20899075
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6 0
2 years ago
Type of element or substance that is not a metal
marshall27 [118]

Answer:

The non-metals or non-metallic elements; hydrogen (H), carbon (C), nitrogen (N), oxygen (O), phosphorus (P), sulphur (sulfer) (S), selenium (Se), (Uuo may belong here) and the noble gases form a relatively small group with a step like pattern towards the left-hand side of the periodic table (hydrogen being the odd one .

8 0
3 years ago
How many moles are in a 4.5g of Sulfur?
Vadim26 [7]

Answer:

~0.14

Explanation:

There are roughly ~0.14 moles in 4.5g of Sulfur. 1 mol = 32.06 g of Sulfur, so we just find the ratio and then multiply.

5 0
3 years ago
Read 2 more answers
A given substance is a white solid at 250C. It melts at 1500C without decomposing, and the melt does not conduct an electric cur
joja [24]

Answer:

The substance can be best classified as a molecular substance

Explanation:

The given information are;

The physical state of the substance at 25°C = Solid state

The physical state of the substance at 150°C = Molten

Molecular substances are those with bonds formed by electron sharing among the constituent atoms and they contain a few number of atoms per molecule. Molecular compounds with molecular weight less than 100, usually exist as liquids or gases at room temperature, while those with molecular weights over 100 can be found in a solid state at room temperature.

Generally, molecular compounds are usually volatile and have a melting point less than 300°C

Therefore, the substance can be best classified as a molecular substance.

5 0
3 years ago
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