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ad-work [718]
4 years ago
13

Quick chemistry question (photo attached)

Chemistry
1 answer:
azamat4 years ago
5 0

Answer:

18,8 kJ

Explanation:

Heat=(ΔH)*ν, where ν=m(CH₃OH)/M(CH₃OH). Then

Heat=\frac{m(CH_3OH)*H}{M(CH_3OH))}=\frac{15.8*38.0}{32} =18.76(kJ).

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Cool air can hold less water vapor than warm air. Apply this fact to explain why clouds and precipitation form on the windward s
Simora [160]

The pressure is directly proportional to temperature (when the pressure decrease the temperature decrease too). Because the air parcel expands so the molecules will not interact with each other as much.

The energy of the particles does not change but the fact that the particles are more spaced out means the parcel is cooler.

so now, the warmer a parcel of air the more water vapor it can hold. so, if a parcel of air cools it's ability to hold water vapor drops and if it drops to a low enough point that is when the water vapor will condense and turn back into liquid water. This is how clouds and precipitation form on the the windward side of the mountain.

3 0
3 years ago
What is the basic unit of structure and function in all living things? a cell b organism c atom d plasma
valkas [14]

Answer:

A. Cell

Explanation:

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3 years ago
Explain all ways your atom and symbol for it would change if you removed 2 electrons from the atom
MissTica

Each atom/element has an electron configuration

The electron configuration shows the energy level of the electron

Each electron configuration has 4 quantum numbers, namely n, l, ml, and ms

  • n = the principal
  • l = the angular momentum / azimuthal
  • ml = the magnetic
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We make an example of the element Mg which is in group 2 with the atomic number 12

Electron configuration of Mg: [Ne] 3s² or 1s² 2s² 2p⁶ 3s²

if Mg removes 2 electrons then Mg will form a positive ion (cation) Mg²⁺

This cation is included in the monatomic ion because it is formed from one element (in contrast to the polyatomic ion, which is formed from two or more elements such as SO₄²⁻, ClO₃⁻)

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So atoms can be positively or negatively charged depending on removing or attracting electrons

6 0
4 years ago
What happens when you drop iodine on a leaf?
insens350 [35]
When you drop iodine on a leaf you may observe a colour change of orange/brown to a blue/black complex.

This is because in the leaf there are starch molecules that form a blue/black complex with the starch molecules.

hope that helps :)
6 0
3 years ago
1: What is needed for photosynthesis? What are the results of photosynthesis?
bixtya [17]

Answer:

Carbon dioxide is an atmospheric constituent that plays several vital roles in the environment. It is a greenhouse gas that traps infrared radiation heat in the atmosphere. It plays a crucial role in the weathering of rocks. ... It is stored in biomass, organic matter in sediments, and in carbonate rocks like limestone.

Explanation:

3 0
3 years ago
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