1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Ierofanga [76]
3 years ago
7

Aurelie is doing a lab in her chemistry class. Her teacher defined a calorie as the amount of energy needed to raise the

Biology
1 answer:
Anarel [89]3 years ago
8 0

Answer:

1.50 cal

Explanation:

Given data:

Mass of water = 300 g

Initial temperature = 20 °C

Final temperature = 25 °C

Calories needed = ?

Formula:

Q = m.c. ΔT

Q = amount of heat absorbed or released

m = mass of given substance

c = specific heat capacity of substance

ΔT = change in temperature

Solution:

ΔT  = T2 - T1

ΔT  = 25 °C - 20°C

ΔT  =  

Q = m.c. ΔT

Q = 300 g . 4.18j/g. °C . 5°C

Q = 6270 J

J calories:

6270 / 4184 = 1.50 cal

You might be interested in
Mitosis is responsible for growth, repair, and maintenance in an organism because
lisabon 2012 [21]
Mitosis<span> plays an important part in the life cycle of most living things, though to varying extents. In unicellular </span>organisms<span> such as bacteria, </span>mitosis<span> is a type of asexual reproduction, making identical copies of a single cell. In </span>multi cellular organisms,mitosis<span> produces more cells for </span>growth<span> and </span>repair<span>.</span><span />
4 0
4 years ago
Read 2 more answers
Haemophilia is sex-linked and is caused by a recessive allele. A woman’s father has haemophilia, but her husband does not. The w
USPshnik [31]

Answer:

I.

Explanation:

The woman's father has haemophilia so his genotype must be XhY, so his daughter can only have the following genotype: XHXh. Her husband is not a haemophiliac so his genotype must be XHY. There is a 50% chance that the mother's gamete has the recessive allele for haemophilia. If she has a son that son will have a 50% chance of getting the Xh. This also applies to daughters, but they will get the normal allele XH from their father so the daughter will have a 0% chance of developing haemophilia.

7 0
3 years ago
What is the importance of the phosphorus cycle??
dimulka [17.4K]

Phosphorus is an essential nutrient for plants and animals. Phosphorus is a limiting nutrient for aquatic organisms. Phosphorus forms parts of important life-sustaining molecules that are very common in the biosphere.


5 0
4 years ago
What protects the inside of the cell from the outside world?
mafiozo [28]
The cell membrane protects the inside of the cell from the outside world. 

The cell wall protects the plants inside of the cell from the outside world.
8 0
3 years ago
Read 2 more answers
If mendel crossed a plant with white flowers and a plant with violet flowers, thats were completely identical in every other cha
IRINA_888 [86]

Answer:

b

Explanation:

7 0
3 years ago
Read 2 more answers
Other questions:
  • Which statement correctly compares nucleus acid and carbohydrates
    11·1 answer
  • What is a jet stream?
    13·2 answers
  • (Click the picture)
    15·1 answer
  • 10. In which organelle must DNA replication occur? *
    12·1 answer
  • What are the basic structural units that form the tropical coral reefs?
    14·1 answer
  • Calculate how many organisms are in your population if a 165-member population had a 20% increase?
    5·1 answer
  • Which best describes stem cells
    13·1 answer
  • What organelles are used in passive and active transport
    8·1 answer
  • Question 1 Multiple Choice Worth 4 points)
    15·1 answer
  • True or false: The heart myocardium is nourished primarily through the diffusion of nutrients from the blood in the heart chambe
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!