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
You have 1169.6 g of a bleach solution. The percent by mass of the solute sodium hypochlorite, NaOCl, is 3.62%. How many grams o
Aneli [31]

Answer:

Mass of solvent is 1127.3 g

Explanation:

NaOCl → 3.62%

This percent means, that in 100 g of bleach solution, there are 3.62 g of NaOCl. So let's make a rule of three:

100 g of bleach solution have 3.62 g

1169.6 g of bleach solution may have (1169.6  . 3.62) /100 = 42.3 g

42.3 g is the mass of NaOCl in the solution

Mass of solution = Mass of solvent + Mass of solute

1169.6 g = Mass of solvent + 42.3 g

1169.6 g - 42.3 g = Mass of solvent → 1127.3 g

7 0
3 years ago
Read 2 more answers
Are electrons exchanged between ionic or covalent bonds
Rudik [331]

Answer:

Ionic bonds form when a nonmetal and a metal exchange electrons, while covalent bonds form when electrons are shared between two nonmetals.

3 0
3 years ago
Read 2 more answers
Most gases exist as molecules, for example, fluorine is F2.
Kryger [21]
They are all stable and have eight valence electrons
4 0
3 years ago
Read 2 more answers
Question 1 (1 point)
Dima020 [189]

Answer:

1. Both are made up of two substances that are chemically combined.                   2. oxygen(O2) , 3. CARBON (C) , 4. AIR(N2 nixed with O2 AND CO2), 5. CANNOT BE SEPARATED BY PHYSICAL MEANS

Explanation:

<em>HOPE IT HELPS</em>

4 0
2 years ago
pplication)Using multiple models simultaneously: This FNT refers to a processinvolving three moles of a diatomic gas (which beha
Fiesta28 [93]

Complete Question

Questions Diagram is attached below

Answer:

*  W=1142.86Joule

*  Q=997.7J

*  H=2140.5J

Explanation:

From the question we are told that:

Temperature T=337K

Pressure P=(60-55)Pa*10^5

VolumeV=(1.6-1.4)m^3*10^{-3}

Generally the equation for gas Constant is mathematically given by

\frac{P_2}{P_1}=\frac{V_1}{V_2}^n

 \frac{55*10^5}{60*10^5}=\frac{1.4*10^{-3}}{1.6*10^{-3}}^n

 n=0.65

Therefore

Work-done

 W=\int{pdv}

 W=\frac{55*10^5*1.6*10^{-3}*60*10^5*1.4*10^{-3}}{1-0.65}

 W=1142.86Joule

Generally the equation for internal energy is mathematically given by

 Q=mC_vdT\\\\Q=\frac{3*1*3.314*16}{1.4-1}

 Q=997.7J

Therefore

 H=Q+W

 H=997.7J-11.42.9

 H=2140.5J

5 0
2 years ago
Other questions:
  • How many moles of oxygen gas (O2) are in a 2.50 L container at standard temperature and pressure?
    11·1 answer
  • 12. Which of the planets in the solar system
    15·1 answer
  • If you examined the human body on a chemical composition basis, which of the following combinations of elements would be most co
    9·1 answer
  • Hey, it'd be really cool if someone could help me with this-- 15 pts!
    5·1 answer
  • What is the density of iron if 5.0ml has a mass of 39.5g?
    8·1 answer
  • Drag the slider from January to December. Based on what you observe, do you think Barcelona has large temperature changes throug
    14·1 answer
  • The gold metal is heated, pounded and shaped until it forms a wedding ring.
    13·1 answer
  • What type of molecule provide cells with energy
    7·1 answer
  • What is the valence number of an element that has 3 electron in its outermost shell?
    15·1 answer
  • Please help me with 1,2,3,4,5,6 please I really need help
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!