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
Natalija [7]
1 year ago
7

!!!!100 POINTS!!!!

Chemistry
1 answer:
Cerrena [4.2K]1 year ago
6 0

The research of astronomy during the time period of 1970 - 1990 is given below:

<u>Date</u>                                                   <u>Event</u>

1. 15 June 1974               Black Brant VC sounding rocket from White Sands.

2. 14 May 1973              Launch of Skylab, the USA's first space station

3. 26 July 1971           Launch of Apollo 15

<h3>What is Astronomy?</h3>

This refers to the branch of science that deals with celestial bodies and their relation to each other.

Hence, from information about astronomy, between the time period 1970 - 1990 as it was on the 26th of December, 1974 that the Soviet space station Salyut-4 was launched.

The event I think had the greatest impact in astronomical history during this time period was the launch of Apollo 16.

Read more about astronomy here:

brainly.com/question/1141458

#SPJ1

You might be interested in
How many protons z and how many neutrons n are there in a nucleus of the most common isotope of silicon, 2814si?
zheka24 [161]
The 28 is the sum of the protons and neutrons in the element silicon.
ALL silicon atoms have 14 protons in the nucleus, so we can turn this into an equation:
#protons + #neutrons = 28
14 + #neutrons = 28
#neutrons = 14
#protons = 14
7 0
3 years ago
Read 2 more answers
What was Fredrick Hoyle trying to find out?
joja [24]

Answer:

Hoyle believed that as new matter forms,

6 0
3 years ago
Which category does the ion PO43- belong to?
Katena32 [7]

Answer:

c polyatomic anion

Explanation:

8 0
3 years ago
Are all mixtures solutions?​
marin [14]

Answer:

Not all mixtures are solutions. A solution is a specific term that describes an even or homogeneous mixture of a solute, the substance being mixed, in a solvent, the substance that is in a greater amount in which the solute dissolves. All solutions are mixtures because it is two or more substances mixed together.

Explanation:

7 0
3 years ago
HI decomposes to H2 and I2 by the following equation: 2HI(g) → H2(g) + I2(g);Kc = 1.6 × 10−3 at 25∘C If 1.0 M HI is placed into
dsp73

<u>Answer:</u> The concentration of hydrogen gas at equilibrium is 0.037 M

<u>Explanation:</u>

We are given:

Initial concentration of HI = 1.0 M

The given chemical equation follows:

                       2HI(g)\rightleftharpoons H_2(g)+I_2(g)

<u>Initial:</u>               1.0

<u>At eqllm:</u>        1.0-2x          x           x

The expression of K_c for above equation follows:

K_c=\frac{[H_2][I_2]}{[HI]^2}

We are given:

Kc=1.6\times 10^{-3}

Putting values in above expression, we get:

1.6\times 10^{-3}=\frac{x\times x}{(1.0-2x)^2}\\\\x=-0.043,0.037

Neglecting the negative value of 'x' because concentration cannot be negative

So, equilibrium concentration of hydrogen gas = x = 0.037 M

Hence, the concentration of hydrogen gas at equilibrium is 0.037 M

6 0
3 years ago
Other questions:
  • Don’t understand it. Please help
    15·2 answers
  • To measure the temperature of water in a chemistry expierment You should use the Fahrenheit scale. True or false
    10·1 answer
  • A 1000-ml bag of d5w 1/2 ns is to infuse over 8 hours. what is the flow rate of the infusion?
    14·1 answer
  • A gas mixture with 4 mol of Ar, x moles of Ne, and y moles
    8·1 answer
  • How many minutes are in 3.5 years
    9·1 answer
  • 100 PIONTSSSSS HELP ASAP
    9·1 answer
  • I need it now pleasee help
    8·1 answer
  • How are a moon and an asteroid different? (2 points)
    7·1 answer
  • Can you help me please..
    5·1 answer
  • a gas exerts a pressure of 1.00 atm at 273 K. At what tempreture the gas exerts a pressure of 4.00 atm.
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!