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trasher [3.6K]
4 years ago
13

Which of the following materials is most likely to eject an electron when hit by a photon?

Chemistry
1 answer:
Usimov [2.4K]4 years ago
3 0

Answer:sodium

Explanation:

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Will sugar increase or decrease the surface tension of water?
blagie [28]

Answer:

sugars such as dextrose and sucrose increase the surface tension of water. The effect was interpreted as a depletion of the solute molecules from the water-air interface.

7 0
4 years ago
The stopcock connecting a 4.87 L bulb containing hydrogen gas at a pressure of 4.38 atm, and a 4.87 L bulb containing argon gas
andrew-mc [135]

Answer:

P = 3,63 atm

Explanation:

Using PV=nRT and knowing the temperature in the problem remains constant it is possible to rewrite this formula, thus:

PV = kn, where k is RT (Constant), P is pressure, V is volume and n are moles.

The first bulb contains:

4,87L×4,38atm = 21,3k moles

And the second bulb:

4,87L×2,90atm = 14,1k moles

When gases are mixed, the total moles are:

21,3k moles + 14,1k moles = <em>35,4k moles</em>

As total volume is 4,87L + 4,87L = <em>9,74L</em>

Replacing:

P = kn/V

P = 35,4k moles / 9,74L

<em>P = 3,63 atm</em>

<em></em>

I hope it helps!

7 0
3 years ago
Consider the nuclear equation below. Superscript 235 subscript 92 upper U right arrow superscript 4 subscript 2 upper H e. What
coldgirl [10]

Answer:

\rm_{90}^{231}\text{Th}

Explanation:

The unbalanced nuclear equation is

\rm _{92}^{235}\text{U} \longrightarrow \,  _{2}^{4}\text{He} + X

Let's write X as a nuclear symbol.

\rm _{92}^{235}\text{U} \longrightarrow \,  _{2}^{4}\text{He} + _{Z}^{A}\text{X}

The main point to remember in balancing nuclear equations is that the sums of the superscripts and of the subscripts must be the same on each side of the reaction arrow.

Then

235 = 4 + A , so A = 235 - 4 = 231, and

 92 = 2 + Z , so  Z =   92 - 2 =  90

And your nuclear equation becomes

\rm _{92}^{235}\text{U} \longrightarrow \,  _{2}^{4}\text{He} +\, _{90}^{231}\text{X}

Element 90 is thorium, so  

\rm X = _{90}^{231}\text{Th}

7 0
4 years ago
Vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv
DIA [1.3K]

Answer:

Wwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwww

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3 0
4 years ago
Which substance is the most common type of SOLVENT?
just olya [345]

Answer:

Water

Explanation:

Sugar and salt would both be considered solutes, and out of vinegar and water, water is the most common solvent.

Have a nice day!

5 0
3 years ago
Read 2 more answers
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