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
34kurt
3 years ago
8

Which scientist was responsible for discovering the neutron? A. Niels Bohr B. Robert Millikan C. James Chadwick D. Ernest Ruther

ford
Chemistry
2 answers:
Murrr4er [49]3 years ago
6 0
A I think I cant remember so I hope im correct
allsm [11]3 years ago
6 0
C choice is correct.james chadwick
You might be interested in
13. A mixture of MgCO3 and MgCO3.3H2O has a mass of 3.883 g. After heating to drive off all the water the mass is 2.927 g. What
rjkz [21]

Answer:

63.05% of MgCO3.3H2O by mass

Explanation:

<em>of MgCO3.3H2O in the mixture?</em>

The difference in masses after heating the mixture = Mass of water. With the mass of water we can find its moles and the moles and mass of MgCO3.3H2O to find the mass percent as follows:

<em>Mass water:</em>

3.883g - 2.927g = 0.956g water

<em>Moles water -18.01g/mol-</em>

0.956g water * (1mol/18.01g) = 0.05308 moles H2O.

<em>Moles MgCO3.3H2O:</em>

0.05308 moles H2O * (1mol MgCO3.3H2O / 3mol H2O) =

0.01769 moles MgCO3.3H2O

<em>Mass MgCO3.3H2O -Molar mass: 138.3597g/mol-</em>

0.01769 moles MgCO3.3H2O * (138.3597g/mol) = 2.448g MgCO3.3H2O

<em>Mass percent:</em>

2.448g MgCO3.3H2O / 3.883g Mixture * 100 =

<h3>63.05% of MgCO3.3H2O by mass</h3>
6 0
3 years ago
Which of the following situations contains an example of a chemical reaction?
bogdanovich [222]

A bicycle rusting after it is left in the rain is an example of a chemical reaction because it involves oxidation (Option d).  

<h3>What is a chemical reaction?</h3>

A chemical reaction can be defined as a phenomenon in which one or more substances called reactants react to form one or more different compounds, which are known as products.

A chemical reaction may include an enzyme that works to increase the seed of the reaction in normal conditions by lowering the activation energy of the reaction.

Therefore, we can conclude that a chemical reaction such as oxidation in a bicycle is a process where reactants combine or break down to form the products of such reaction.

Complete question:

Which of the following situations contains an example of a chemical reaction?

a. Ice forming after water is placed in a freezer

b. Watercolor paint drying on paper

c. a sugar cube dissolving in a glass of water

d. a bicycle rusting after it is left in the rain

Learn more about chemical reactions here:

brainly.com/question/11231920

#SPJ1

6 0
1 year ago
Another example of a parasitic
sasho [114]

Answer:a leech

Explanation: a parasitic relationship is one organism benefit on the other while the other is harmed

7 0
3 years ago
According to observations, the overall chemical composition of our solar system and other similar star systems is approximately
jonny [76]

Answer:A

Explanation:

The solar system consist of the sun, the planets, stars and other objects. The chemical composition of the Sun consist mainly of Hydrogen and helium.

The sun is the largest object in the Solar system, it comprises nearly all the matter in the Solar System, Also the largest planet after the Sun are Jupiter and Saturn are giant planets forming almost the remaining matter of the solar system.

Like the Sun, the mass of Jupiter and Saturn are composed of roughly 98% hydrogen and helium with 2% of all the other elements combined.

3 0
3 years ago
the amount of water on Earth is _______but the form and location of the water _______ as it moves through the hydrologic cycle
Lorico [155]

Hey there!

I can't be sure my answers are the exact words, but it should be something along the lines of...

The amount of water on Earth is constant, but the form and location of the water changes as it moves through the water cycle.

This means that Earth has always had the same amount of water within in, along with it being the same water the whole time. No new water was introduced to our planet. Some of our water is liquid, some is solid, and some is gas. Some is deep in the soil and some is high up in the atmosphere. Some is in rain and some is in snow.

I hope this helps!

6 0
3 years ago
Other questions:
  • How many electrons are contained in the p orbital of the methyl radical?
    13·1 answer
  • Will give you know what to first correct answer
    7·1 answer
  • What is the key characteristic of an oxidation–reduction reaction?
    14·2 answers
  • Determine the answer for the equation below with correct number of significant figures: 3.215 x 13.2 ÷ 0.218 = ________
    9·2 answers
  • Question 1 (1 point)
    7·2 answers
  • What volume of oxygen gas, in milliliters, is required to react with 0.640 g of SO2 gas at STP?
    13·2 answers
  • 1. How many elements are in the following equation, FeCrO4 ?<br> 1<br> 2<br> 3<br> 4<br> O
    6·2 answers
  • Rank the following series of molecules or ions in order of decreasing bond energy using their bond order to predict relative mag
    5·1 answer
  • When carbon is in a plant, what form is it in?
    14·1 answer
  • A solution is diluted by adding more _____, which means the _____ of the solution increases but the amount (moles) of solute sta
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!