Answer:
The volume of the liquid should be measured before it is heated.
Explanation:
Each kind of scientist is matched with an aspect of the hot spring he or she is most likely to study as follows:
- <u>Geologist:</u> rocks around and under the hot spring.
- <u>Ecologist:</u> relationships between organisms and the hot spring.
- <u>Sociologist:</u> human behavior around the hot spring.
- <u>Meteorologist:</u> atmosphere and weather around the hot spring.
<h3>What is a scientific observation?</h3>
A scientific observation can be defined as an active acquisition of knowledge (information) through one of the sense organs, while using scientific tools and instruments.
<h3>The types of
scientific observation.</h3>
In Science, there are two main types of scientific observation and these include the following:
<h3>What is a
hot spring?</h3>
A hot spring can be defined as a natural or an artificially-induced phenomena in which very hot groundwater flows out from the Earth's crust due to the heat present in the geosphere.
In this exercise, you're required to match each kind of scientist with an aspect of the hot spring he or she is most likely to study as follows:
- <u>Geologist:</u> rocks around and under the hot spring.
- <u>Ecologist:</u> relationships between organisms and the hot spring.
- <u>Sociologist:</u> human behavior around the hot spring.
- <u>Meteorologist:</u> atmosphere and weather around the hot spring.
Read more on hot springs here: brainly.com/question/4421633
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Complete Question:
Match each kind of scientist with an aspect of the hot spring she or he might study.
A. Geologist
B. Ecologist
C. Sociologist
D. Meteorologist
1. Relationships between organisms and the hot spring.
2. Human behavior around the hot spring.
3. Rocks around and under the hot spring.
4. Atmosphere and weather around the hot spring.
Answer:
m = 32.34 pounds of ice.
Explanation:
In this case we need to use the following expression of heat:
q = m * ΔHf (1)
Where:
q: heat absorbed in J or kJ
m: mass of the compound in g
ΔHf: heat of fusion of the water in kJ/g
We are asked to look for the mass of ice in pounds, so after we get the grams, we need to convert the grams to pounds, using the following conversion:
1 pound --------> 453.59 g (2)
So, we have the heat and heat of fusion, from (1) let's solve for the mass, and then, using (2) the conversion to pounds:
q = m * ΔHf
m = q / ΔHf
m = 4900 / 0.334 = 14,670.66 g of ice
Now, the conversion to pounds:
m = 14,670.66 g * 1 pound/453.59 g
<h2>
m = 32.34 pounds of ice.</h2>
Hope this helps
Answer:
189.2 KJ
Explanation:
Data Given
wavelength of the light = 632.8 nm
Convert nm to m
1 nm = 1 x 10⁻⁹
632.8 nm = 632.8 x 1 x 10⁻⁹ = 6.328 x 10⁻⁷m
Energy of 1 mole of photon = ?
Solution
Formula used
E = hc/λ
where
E = energy of photon
h = Planck's Constant
Planck's Constant = 6.626 x 10⁻³⁴ Js
c = speed of light
speed of light = 3 × 10⁸ ms⁻¹
λ = wavelength of light
Put values in above equation
E = hc/λ
E = 6.626 x 10⁻³⁴ Js ( 3 × 10⁸ ms⁻¹ / 6.328 x 10⁻⁷m)
E = 6.626 x 10⁻³⁴ Js (4.741 x 10¹⁴s⁻¹)
E = 3.141 x 10⁻¹⁹J
3.141 x 10⁻¹⁹J is energy for one photon
Now we have to find energy of 1 mole of photon
As we know that
1 mole consists of 6.022 x10²³ numbers of photons
So,
Energy for one mole photons = 3.141 x 10⁻¹⁹J x 6.022 x10²³
Energy for one mole photons = 1.89 x 10⁵ J
Now convert J to KJ
1000 J = 1 KJ
1.89 x 10⁵ J = 1.89 x 10⁵ /1000 = 189.2 KJ
So,
energy of one mole of photons = 189.2 KJ
