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
Lady_Fox [76]
3 years ago
6

I need help with this science question ​

Chemistry
1 answer:
anastassius [24]3 years ago
4 0

the answer is C. If he compares the advertised detergent with other laundry detergents, he will be able to see if the advertised detergent is as good as the others.

You might be interested in
What determines how ionic bonds will form?
Harrizon [31]

Answer:

I think the answer should be B. Number of valence electrons

8 0
3 years ago
The heat capacity of an object depends on its ______
sdas [7]

Answer:

mass I hope can help this answer

Explanation:

keep on learning

6 0
2 years ago
What is the half-life of an isotope that decays to 6.25% of its original activity in 18.9 hours?
inessss [21]
Radioactive material obeys 1st order decay kinetics,
For 1st order reaction, we have 
k = \frac{2.303}{t}Xlog \frac{\text{initial conc.}}{\text{final conc.}}
where, k = rate constant of reaction

Given: Initial conc. 100, Final conc. = 6.25, t = 18.9 hours

∴ k = \frac{2.303}{18.9} X log \frac{100}{6.25} = 0.1467 hours^(-1)

Now, for 1st order reactions: half life = \frac{0.693}{k} =  \frac{0.693}{0.1467} = 4.723 hours.


8 0
3 years ago
When the valves are opened and the gases are allowed to mix at a constant temperature, what is the distribution of atoms in each
jek_recluse [69]

Answer:

Equal number of atoms of each gas in each container

Explanation:

When the valves opened, the two contaienrs become one and the gases beging to mix by diffusion. This phenomenom is produced by the differeces of concentration of a gas between two points of the container.

The gases will continue diffunding util their concentration in both containers are equal.

7 0
3 years ago
1. Which graph shows the melting of crystalline solids? Explain your reasoning.
madreJ [45]
(1) The melting of a crystalline solid is best depicted by the second graph. This is because, the second graph shows a horizontal line which means that for a while there was no change in temperature. This zone is the latent heat of fusion. 

(2) The first graph shows the graph of a solid that is just heated but does not experience phase change. However, the second graph shows a solid that changes phase (from crystal/solid to liquid). 
8 0
3 years ago
Other questions:
  • For heat transfer purposes, a standing man can be modeled as a 30-cm-diameter, 175-cm-long vertical cylinder with both the top a
    13·1 answer
  • 4.81 (a) What volume of 0.115 M HClO4 solution is needed to
    11·1 answer
  • Complete the passage about metallic bonding.
    9·1 answer
  • A sample of ideal gas is in a sealed container. The pressure of the gas is 705 torr , and the temperature is 19 ∘C . If the temp
    5·1 answer
  • The quantity, q grams, of the radioactive isotope strontium-90 present in a sample decreases by half over a period of about t =
    7·2 answers
  • Calculate the change in pH of a 1.00 L of a buffered solution preparing by mixing 0.50 M acetic acid (Ka = 1.8 x 10^-5) and 0.50
    8·1 answer
  • Solutions that have more h than oh- ions are
    14·2 answers
  • 6. How does temperature relate to the layers of the atmosphere?
    11·1 answer
  • Emma is doing a laboratory experiment to separate components of crude oil. She decides to use a technique that will separate the
    9·2 answers
  • A 187.4g sample of C3H5(NO3)3 decomposes to produce carbon dioxide, water, diatomic oxygen, and diatomic nitrogen.
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!