Answer:
There are 0.0305 calories in 0.128 joules
Explanation:
Given that,
Heat absorbed, Q = 0.128 J
We need to find the heat energy absorbed in calories.
We know that the relation between joules and calories is as follows :
1 calorie = 4.184 J
1 J = (1/4.184) J
So,
![0.128\ J=\dfrac{0.128 }{4.184}\\\\=0.0305\ cal](https://tex.z-dn.net/?f=0.128%5C%20J%3D%5Cdfrac%7B0.128%20%7D%7B4.184%7D%5C%5C%5C%5C%3D0.0305%5C%20cal)
So, there are 0.0305 calories in 0.128 joules
Answer:
0.8833 mole of C3H8
Explanation:
Given:
Mass of C₃H₈ (Propane) = 38.95 gram
Computation:
Molar mass of C = 12.01
Molar mass of H = 1.008
Molar mass of C₃H₈ (Propane) = 3(12.01) + 8(1.008)
Molar mass of C₃H₈ (Propane) = 36.03 + 8.064
Molar mass of C₃H₈ (Propane) = 44.094
Number of mol in 38.95 gram Propane = Mass / Molar mass
Number of mol in 38.95 gram Propane = 38.95 / 44.094
Number of mol in 38.95 gram Propane = 0.88334
Answer:
D. The telescope detects high-energy electromagnetic waves.
Explanation:
First of all, let's define what X-rays are.
X-rays are electromagnetic waves at high frequency and short wavelength.
The wavelength of X-rays span between 0.01 and 10 nanometers. X-rays are the second-highest frequency electromagnetic waves, after gamma rays, which have higher frequency.
The energy of an electromagnetic wave is directly proportional to its frequency, according to the equation:
![E=hf](https://tex.z-dn.net/?f=E%3Dhf)
where:
h is the Planck constant
f is the frequency of the wave
Since X-rays are high-frequency electromagnetic waves, it means that they also are high-energy electromagnetic waves.
Therefore, the correct answer is
D. The telescope detects high-energy electromagnetic waves.
Answer:
gas is the correct answer.
Explanation:
ause of caries. ... Streptococcus mutans, which causes dental caries, splits the sucrose in food and uses one of the sugars to build its capsule, which sticks tightly to the tooth. The bacteria that are trapped in the capsule use the other sugar to fuel their metabolism and produce…