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
Anastasy [175]
3 years ago
9

Mrs. Mason does not want the ringing of the telephone to water up her baby. Which of the following would produce the greatest re

duction of noise from the ringing of the telephone
Chemistry
1 answer:
PilotLPTM [1.2K]3 years ago
7 0
What are the options I could help
You might be interested in
A creative super(hero/villian) using the element Zinc in the name
SCORPION-xisa [38]
Captain Zinc, Zincatron, Zincafier, Zinckers, Zincman, Zincit, etc. Please mark me brainliest I'm trying to level up

6 0
3 years ago
Which of the following is an example of a genetically modified crop?
lord [1]

Answer:

Explanation:

Genetically modified crops (GM crops) are plants used in agriculture, the DNA of which has been modified using genetic engineering methods. In most cases, the aim is to introduce a new trait to the plant which does not occur naturally in the species.

4 0
3 years ago
Read 2 more answers
Which organelles surround the cell? Select two options.
rjkz [21]
Cell Wall
Cell Membrane
3 0
3 years ago
Benzoyl peroxide, the substance most widely used against acne, has a half-life of 9.8 × 103 days when refrigerated. How long wil
prohojiy [21]

Answer:

7.3\times 10^2\ days

Explanation:

Given that:

Half life = 9.8\times 10^3 days

t_{1/2}=\frac{\ln2}{k}

Where, k is rate constant

So,  

k=\frac{\ln2}{t_{1/2}}

k=\frac{\ln2}{9.8\times 10^3}\ days^{-1}

The rate constant, k = 0.00007 days⁻¹

Using integrated rate law for first order kinetics as:

[A_t]=[A_0]e^{-kt}

Where,  

[A_t] is the concentration at time t

[A_0] is the initial concentration

Given:

5 % is lost which means that 0.05 of [A_0] is decomposed. So,

\frac {[A_t]}{[A_0]} = 1 - 0.05 = 0.95

t = ?

\frac {[A_t]}{[A_0]}=e^{-k\times t}

0.95=e^{-0.00007\times t}

t = 732.76 days = 7.3\times 10^2\ days

7 0
3 years ago
How red blood cells different to animal cells
barxatty [35]

Answer:

By contrast, the red blood cells of mammals lack nuclei and other internal structures found in most animal cells. This simplification allows mammal red blood cells to carry more gas-transporting proteins and to squeeze through smaller blood vessels.

Explanation:

4 0
3 years ago
Other questions:
  • What will be the effect on the concentration of NH3 if the pressure decrease
    9·2 answers
  • A chemist must prepare 900.0mL of sodium hydroxide solution with a pH of 13.90 at 25°C. She will do this in three steps: Fill a
    14·1 answer
  • How is good at electron configurations in chemistry?
    14·1 answer
  • At STP, what is the volume occupied by 6.7 mol H2?​
    15·1 answer
  • A scientist discovers a new type of polymer. What must be true about this polymer?
    9·2 answers
  • What is a product of science
    11·1 answer
  • (science)
    11·2 answers
  • Which number shows the magma chamber?<br> O 1<br> O 2<br> O 3<br> O4
    14·2 answers
  • Which animals has a pulse rate of more than 1200 beats per minute?​
    6·2 answers
  • The gas in a balloon occupies 2.25 L at 298 K and 300 kPa. At
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!