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
andrew-mc [135]
2 years ago
15

What three countries are considered the ‘big three’ when it comes to space programs and are the only countries to successfully l

aunch human missions to space?
A. Canada, the United States, and Japan
B. China, France, and the United States
C. United States, Russia, and China
D. Japan, United States, and France
Chemistry
1 answer:
Colt1911 [192]2 years ago
8 0

Answer:

C. United States, Russia, and China

Explanation:

Only three nations (Russia, U.S., China) have launched their own crewed spacecraft, with the Soviets/Russians and the American programs providing rides to other nations' astronauts. Twenty-seven "first flights" occurred on Soviet or Russian flights while the United States carried fourteen.

You might be interested in
The steam engine in a train heats water until it becomes steam. The steam pushes pistons to move the train. The train is changin
Strike441 [17]
The answer to your question is option A.
8 0
3 years ago
2H2 + 02&gt;2 H20<br> What is the reaction
Murrr4er [49]

Answer: The actual reaction to make water is a bit more complicated: 2H2 + O2 = 2H2O + Energy. In English, the equation says: To produce two molecules of water (H2O), two molecules of diatomic hydrogen (H2) must be combined with one molecule of diatomic oxygen (O2). Energy will be released in the process.

Explanation:

8 0
3 years ago
What element is reduced in the following reaction?
riadik2000 [5.3K]
 the oxidation states of the elements before and after the reaction is;
Pb oxidation state changes from 0 to +2
SO₄²⁻ ion there's no change in the oxidation state during the reaction
Au oxidation state changes from +3 to 0
reduction reactions are when there's a decrease in the oxidation state of the species 
oxidation reactions are when theres an increase in the oxidation state of the species 
the element where there's a decrease in oxidation state is Au. 
Therefore Au gets reduced.
answer is B) Au
6 0
3 years ago
Stoichiometry is based on the _______________________________
SCORPION-xisa [38]

Answer:

Explanation:

Stoichiometry is based on the <u>conservation of mass</u>.

4 0
3 years ago
Naming Compounds of the Nonmetals
Xelga [282]

Nitrogen Dioxide is the Answer. If any doubt leave a comment

8 0
3 years ago
Read 2 more answers
Other questions:
  • An Olympic-size pool is 50.0 m long and 25.0 m wide.
    6·1 answer
  • What are some major differences between religions
    10·1 answer
  • How much 0.02 m kmno4 solution should be needed if the solutions tested have a composition of 3% h2o2 by mass?
    9·1 answer
  • Which of the following would have to gain two electrons in order to achieve a noble gas electron configuration?
    10·1 answer
  • The enthalpy of formation of xef2(g) is –108 kj mol–1 and the bond dissociation enthalpy of the f–f bond is 155 kj mol–1 . what
    15·2 answers
  • Coal and Diamond are two different form of carbon. which is denser?​
    13·2 answers
  • A student dissolves 13.8g of sodium chloride in of water in a well-insulated open cup. He then observes the temperature of the w
    5·1 answer
  • The forces between water molecules are stronger than the forces between ethanol molecules. Which liquid would probably be most d
    5·2 answers
  • How many mL (to the nearest mL) of 0.140-M KF solution should be added to 400. mL of 0.212-M HF to prepare a pH
    14·1 answer
  • Chemical bonding for <br><br> Rb &amp; nitrogen,<br><br> Need help!!!
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!