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Lelu [443]
2 years ago
13

Electrons are held in an atom by attraction to what particle or location?.

Chemistry
1 answer:
Vikentia [17]2 years ago
6 0
Attraction to the positively charged protons in the nucleus
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A teacher brings in a cup of iced water and asks students to discuss if the system is exothermic or endothermic . Aida states th
Montano1993 [528]

Answer:

C

Explanation:

In thermodynamics, a exothermic system looses heat to the surroundings while an endothermic system absorbs heat from the surroundings.

A system is a part the universe marked off by a specified boundary. The contents of the cup constitutes the system in this case.

The region of space outside the system is called the surroundings. Hence everything outside the cup constitutes the surroundings.

7 0
2 years ago
Difference between saturated and supersaturated solutions
Luba_88 [7]
Saturated had as much solute that it can hold, supersaturated holds more than can normally be dissolved.
5 0
3 years ago
What is the average kinetic energy of 1 mole of gas at 0 degrees kelvin
forsale [732]
The average kinetic energy of a mole of substance is determined from the formula, E=1.5RT where R is 8.314 J/mol K. Substituting temperature of zero kelvin to the equation, the energy is zero. It is recalled that at zero kelvin or absolute zero temperature, all molecules are not moving.
7 0
3 years ago
Which piece of laboratory glassware did you find to be more efficient for the solvent extraction procedure, and why?
Anna [14]

Answer:

Condenser

Explanation:

Condenser is highly efficient when dealing with the vapors of the product are need to be liquified. It is mostly automated and regularly condenses the incoming vapors into liquid. It is very easy to use. All we have to do it to attach incoming and outgoing flow pipes and constantly monitor the flow of cold water through the condenser. It is made up of special kind of PYREX glass so that it won't break when dealing with steam.

7 0
3 years ago
What are four chemical and physical properties of phosphorus?
DedPeter [7]

Answer:

Properties: The melting point of phosphorus (white) is 44.1°C, boiling point (white) is 280°C, specific gravity (white) is 1.82, (red) 2.20, (black) 2.25-2.69, with a valence of 3 or 5. There are four allotropic forms of phosphorus: two forms of white (or yellow), red, and black (or violet).Oct 7, 2019

Atomic Number: 15

Atomic Weight: 30.973762

Explanation:

: )

8 0
2 years ago
Read 2 more answers
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