How much amount of heat is required to raise the temperature of 20 grams of water from 10°C to 30°C? The specific heat of water is 4.18 J/g°C.
Answers
Q = m c ΔT
m = 20 g, c = 4.18 J/g°C, ΔT = 30° - 10° = 20° C
Q = 20 g · 4.18 J/g°C · 20°C = 1672 J
Answer: C ) 1700 J
Answer : The amount of heat is required is, 1672 J
Solution :
Formula used :
Q= heat gained
m= mass of the substance = 20 g
c = heat capacity of water = 4.18 J/g ° C
= final temperature =
= initial temperature =
Now put all the given values in the above formula, we get the heat required.
Q = 1672 Joules
Therefore, the amount of heat is required is, 1672 J
Related Questions
Which type of bond occurs between water moleculesnonpolar covalentmetallichydrogenionic
To neutralize gastric juices in your stomach antacids contain
Who was the 1st to use film in intraoral radiography?
What is the acceleration of all objects due to gravity? What does this mean?
Answers
Hope this helps.
Answers
1. Blockage of the ear canal - ear wax is naturally produced by our ear canal which serves as self- protection. It also block sounds if the ear canal is not well cleaned.
2. Foreign bodies in the ear canal - foreign bodies such as beads, left residue of cotton, peas or even small insects like bugs, bees, and spiders.
3. Infected Eardrum - eardrum catches sound waves that passes through the ear canal. If the eardrum is damage, it may lessen its ability to catch sound effectively.
The angle of refraction of the light ray as it enters the transparent block from air = 20 degrees
Calculate the absolute index of refraction from the medium of the transparent block
Answers
Answers
Answer:
When the masses drop, they move with the same angular velocity as you before hitting the ground. i.e., they leave your hand with their angular momentum. So, in one view, you can think the mass decreases, which means the moment of inertia also decreases. Therefore, the angular velocity should increase.
cut down trees surrounding his fields
plant trees around the perimeter of his fields
irrigate his fields during dry seasons and droughts
Answers
Answer: Option (c) is the correct answer.
Explanation:
In order to reduce the velocity of wind there should be some placed some barrier near the field. So that when fast moving wind strikes at the surface of barrier then its speed will decrease.
Therefore, the farmer Wilcox should plant trees around the perimeter of his fields which will act as a barrier to the fast moving winds.
adaptations
speciation
genes
Answers
Answer:
"Darwin's finches" reside on the Galapagos Islands. Each species has a different type of beak, however, they can all be traced back to one common ancestor. The different beaks are an example of adaptations.
Explanation:
In biology, adaptation has three related meanings. Firstly, it is the dynamic evolutionary process that fits organisms to their environment, enhancing their evolutionary fitness. Secondly, it is a state reached by the population during that process.