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
algol13
3 years ago
11

Which statement about climate is true?

Chemistry
1 answer:
Y_Kistochka [10]3 years ago
6 0
I believe the answer is B!
You might be interested in
15.3 g of nano3 were dissolved in 100g of water in a calorimeter. The temperature of the water drops from 25.00°c to 21.56°c. Ca
Arturiano [62]

Answer:

0.259 kJ/mol ≅ 0.26 kJ/mol.

Explanation:

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

<em>Q = m.c.ΔT,</em>

where, Q is the amount of heat absorbed by ice (Q = ??? J).

m is the mass of the ice (m = 100.0 g).

c is the specific heat of water (c of ice = 4.186 J/g.°C).

ΔT is the difference between the initial and final temperature (ΔT = final T - initial T = 21.56°C - 25.0°C = -3.44°C).

<em>∵ Q = m.c.ΔT</em>

∴ Q = (100.0 g)(4.186 J/g.°C)(-3.44°C) = -1440 J = -1.44 kJ.

<em>∵ ΔH = Q/n</em>

n = mass/molar mass = (100.0 g)/(18.0 g/mol) = 5.556 mol.

∴ ΔH = (-1.44 kJ)/(5.556 mol) = 0.259 kJ/mol ≅ 0.26 kJ/mol.

3 0
3 years ago
All metals are minerals <br>a. true <br>b. false​
Anettt [7]

Answer:

B. False is the rite answer

7 0
3 years ago
What does mechanical digestion mean ?
Alex787 [66]

Answer:

Explanation:

Mechanical digestion involves physically breaking down food substances into smaller particles to more efficiently undergo chemical digestion. The role of chemical digestion is to further degrade the molecular structure of the ingested compounds by digestive enzymes into a form that is absorbable into the bloodstream.

4 0
3 years ago
Balance the following reaction.<br> A.) 4<br> B.) 2<br> C.) 5<br> D.) blank<br> E.) 3
slega [8]

Answer:

C.5

Hope this helps

7 0
3 years ago
All atoms of the same element have the same what?
Paraphin [41]

Answer:

must have the same number of protons

8 0
2 years ago
Other questions:
  • Given the reaction:
    14·1 answer
  • Iron and vanadium both have the BCC crystal structure and V forms a substitutional solid solution for concentrations up to appro
    12·1 answer
  • A student added 32.60 mL of 0.03020 M NaOH to a 20.0 mL sample of ginger ale before his sample turned pink. (a) How many moles o
    15·2 answers
  • The gold-foil experiment was used to discover which subatomic particle? Question 2 options: electrons protons ==&gt; neutrons (m
    7·2 answers
  • There is strong scientific evidence that individual phytochemical supplements safely provide health benefits.. True or False
    5·1 answer
  • Which ion below is present in greatest concentration in a basic (alkaline) solution
    15·2 answers
  • For the separation of components of a mixture, we are following different methods. What is the condition in which the process of
    8·1 answer
  • What can be a personal question about atoms
    5·2 answers
  • Photosynthesis makes (__________) and (____________) for an ecosystem.
    12·1 answer
  • What is the difference in chemical energy between organic and inorganic materials?
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!