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Viktor [21]
3 years ago
15

What do you see happen when you increase the frequency?

Chemistry
2 answers:
kompoz [17]3 years ago
8 0
When frequency increases more wave crests pass a fixed point each second.
andrew11 [14]3 years ago
5 0
Hope this helps!! Pls mark as brainliest!! (It’s a image btw) have a great night!

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Define what does phase is
NARA [144]
It means a new stage or a new chapter of a process!
5 0
4 years ago
When 3.4 moles of hydrogen gas react with excess oxygen how many moles of water will be produced
s344n2d4d5 [400]
1. start with balanced equation.
2 H2(g) + O2(g<span>) </span><span> 2 H</span>2O(g<span>)
</span>
2. Use stoichiometry 
(3.4moles of H)(2moles of H2O/2moles of H)
The moles of H will cancel, leaving you with moles of H2O. 
The answer is 3.4 moles of H2O
6 0
4 years ago
The density of copper decreases as temperature increases (as does the density of most substances). Which change occurs in a samp
azamat

Answer: Option (c) is the correct answer.

Explanation:

As we know that density the amount of mass present in per unit volume.

Mathematically,      Density = \frac{mass}{volume}

So, it means that density is inversely proportional to volume. Hence, when there will be decrease in density of a substance then there will be increase in its volume. That is, expansion of substance will take place.

Also, boiling point of copper is 2,562 degree celsius but we are heating it up to a temperature of 95 degree celsius. This means that copper will remain in liquid state at this temperature.

Thus, we can conclude that a change which occurs in a sample of copper is that copper sample will expand.

3 0
3 years ago
You have a cup of tea (250 ml) that is 375 K which is too hot to drink. It needs to be cooled to 350 K before you can drink it.
S_A_V [24]

Answer:

The hot tea should transfer <em>25.63 kJ</em> the surroundings to cool the tea.

Explanation:

  • To solve this problem, we can use the relation:

<em>Q = m.c.ΔT,</em>

where, Q is the amount of heat has to be transferred from the tea to the surroundings to cool the tea (Q = ??? J).

m is the mass of the hot tea (m = dV = (1.0 g/mL)(250 mL) = 250 g), suppose the density of water is the density of tea.

c is the specific heat of the hot tea (c = 4.10 J/°C.g).

ΔT is the difference between the initial and final temperature (ΔT = final T - initial T = 350 K - 375 K = -25°C).

<em>∴ Q = m.c.ΔT</em> = (250 g)(4.10 J/°C.g)(-25°C)) = <em>- 25630 J = - 25.63 kJ.</em>

<em>So, the hot tea should transfer 25.63 kJ the surroundings to cool the tea.</em>

4 0
3 years ago
What does this diagram represent?
tamaranim1 [39]

Answer:

The amount of electrons in each atom of the element

Explanation:

4 0
3 years ago
Read 2 more answers
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