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
Nastasia [14]
3 years ago
10

Please help me with this

Chemistry
2 answers:
kondaur [170]3 years ago
5 0
The answer for this question is A
grigory [225]3 years ago
3 0
The answer is student A
You might be interested in
0.0145 moles of helium gas are introduced into a balloon so that the volume of the balloon is 2.54 liters. An additional amount
olga_2 [115]

Answer:

4.43L is final volume of the ballon

Explanation:

Avogadro's law of ideal gases states that <em>equal volumes of gases, at the same temperature and pressure, have the same number of molecules</em>.

The formula is:

\frac{V_1}{n_1} =\frac{V_2}{n_2}

Where V and n are volume and moles of the gas in initial and final conditions.

If the initial conditions are 0.0145 moles and 2.54L and final amount of moles is 0.0253moles, final volume is:

\frac{2.54L}{0.0145mol} =\frac{V_2}{0.0253mol}

V₂ = <em>4.43L is final volume of the ballon</em>

6 0
3 years ago
2. Which set of symbols represents isotopes of the same element?
MariettaO [177]

Answer:

so you can do the maths your self

Explanation:

isotopes are elements with he same proton number but difference in their neutron number

  • proton number is also known as the atomic number
  • mass number is the sum of the proton number and the neutron number
  • mass number = proton number + neutron number
7 0
3 years ago
1)¿Como estoy siendo responsable con el cuidado de mi salud y de los demás , ya sea en casa o si algo a realizar alguna activida
erica [24]

Answer:

The most effective strategy to control the spreading of some infections is through social distancing.

Explanation:

Since we don't have an effective treatment to stop the infection of some pathogens including the recent pandemic SARS-Cov 2 virus, it is imperative to prevent it from spreading

4 0
3 years ago
How do radiography and sonography compare?
lara [203]
Radiography techs are trained to operate medical equipment that uses X-rays and other types of radiation. Ultrasound techs, referred to professionally as diagnostic medical sonographers, operate equipment that uses high-frequency sound waves to create images.

(Credits to google)
8 0
3 years ago
Read 2 more answers
When salt is dissolved in water, the salt particles are referred to as the _____.
Sergio039 [100]
The salt is a solid compound and is considered the "Solute" of the solution.
5 0
3 years ago
Read 2 more answers
Other questions:
  • Use the following information to determine the empirical formula if a compound is found to have 18.7% Li, 16.3% C, and 65.5% O A
    14·1 answer
  • Which of the following is not a renewable resource 1. gold 2. salmon 3. mahogany 4. fresh water
    14·1 answer
  • Write a balanced equation showing how this nucleus decays to form an α particle: thorium−230.
    9·1 answer
  • What type of friction acts on a turning wheel or tire?
    8·1 answer
  • What is the oxidation number of sulfur in the compound: Na2S2O3
    10·1 answer
  • How many moles of Oxygen atoms are in a sample of 3.98 x 10^23 atoms?
    15·2 answers
  • How many grams of perchloric acid should be dissolved in 8500mL of water to make a solution with pH 3.3
    8·1 answer
  • How many significant digits should be used to report the answer to each of the following calculations? (2.75518 + 9.01 + 3.3349)
    15·1 answer
  • The solubility for KCl is 60 g at 40 C. If a solution of KCl contains 79.5 g, is the solution saturated, unsaturated, or supersa
    7·1 answer
  • Barbara is converting 78°F to degrees Celsius. First, she subtracts 32 from 78. What is the next step?
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!