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
Aleksandr-060686 [28]
2 years ago
6

Which scientist was the first to propose that atomic structure contains electrons?

Chemistry
1 answer:
Snezhnost [94]2 years ago
3 0
Answer: J.J. Thompson
You might be interested in
A student wants to make a 0.150 M aqueous solution of silver (I) nitrate but only has 11.27 g of AgNO3. What volume of the 0.150
Usimov [2.4K]

Answer:

442.3 mL

Explanation:

Remember that Molarity is a measure of concentration in Chemistry and it's defined as the number of moles of the substance divided by liters of the solution:

M=\frac{Moles of substance X}{Volume of the solution}

Then, you can express 11.27 g of AgNO3 as moles of AgNO3 using the molar mass of the compound:

11.27 g AgNO_{3} *\frac{1 mole AgNO_{3}}{169.87 g AgNO_{3}} = 0.06634 moles AgNO_{3}

Then you can solve for the volume of the solution:

Volume of the solution=\frac{Moles of AgNO_{3}}{M} =\frac{0.06634 mol AgNO_{3}}{0.150 M} =0.4423 L = 442.3 mL

Hope it helps!

3 0
3 years ago
A Snickers bar contains 27.0 g of sugars (carbohydrates), 4.0 g of protein and 12.0 g of fat. How many food calories (Cal) are c
amm1812

Answer:

There are 232 calories in the bar

Explanation:

Carbohydrates and protein are both 4 calories per gram, while fat is 9 calories per gram.

27*4=108\\4*4=16\\12*9=108\\108+108+16=232

4 0
2 years ago
Astronomers often scan the sky using devices called radio
sukhopar [10]

Answer:

A radio telescope is simply a telescope that is designed to receive radio waves from space.

radio telescopes helps to study naturally occurring radio light from stars, galaxies, black holes, and other astronomical objects. We can also use them to transmit and reflect radio light off of planetary bodies in our solar system.

6 0
2 years ago
Read 2 more answers
PLSS HELP! The gas carbon dioxide is a pure substance. Which of the following is true about carbon dioxide? (4 points)
Nadusha1986 [10]

Answer:

The answer is option A..

5 0
2 years ago
Explain why the following medicines should not be thrown down the drains
8090 [49]
Because medications contains chemicals, it would dissolve into the water and not only would it pollute the water, it could flow out into areas where people are exposed to these waters.
7 0
2 years ago
Other questions:
  • Which of the following groups of carbon compounds includes enzymes? lipids proteins carbohydrates nucleic acids
    14·1 answer
  • What is the chemical equation for the electolysis of common salt?
    9·2 answers
  • On which part of the carbon cycle have humans had the greatest impact? storage of co2 in the oceans all of the answer options ha
    6·1 answer
  • Based on the units given for displacement and time, what will the units for velocity be?
    12·1 answer
  • How many oxygen molecules are in 22.4 liters of oxygen gas at 273 K and 101.3 kPa?
    7·1 answer
  • What is the velocity of a rocket that goes 700 km north in 25 second
    13·2 answers
  • 20 Points!! 10 Each Points Please Help ASAP!! View Attached Image!! Will Mark Brainliest If All Are Answered!!
    7·2 answers
  • describe the number of protons, neutrons, and electrons in the atom, where each type of particle is located​
    7·1 answer
  • MgCl2(at)+Br2(l)=MgBr2(at)+Cl2(g)<br><br> how do you write in a word equation
    12·1 answer
  • A gas has a volume of 13.4 L at 17°C. What is the volume of the gas at standard temperature?
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!