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
kupik [55]
3 years ago
15

The two major classes of telescopes are the _____ and the _____ telescope.

Chemistry
1 answer:
sukhopar [10]3 years ago
4 0

Answer:

refractors and reflectors

Explanation:

You might be interested in
The equilibrium constant, Kc, for the following reaction is 0.967 at 650 K. 2NH3(g) N2(g) 3H2(g) When a sufficiently large sampl
AlekseyPX

Answer: Concentration of NH_3 in the equilibrium mixture is 0.31 M

Explanation:

Equilibrium concentration of H_2 = 0.729 M

The given balanced equilibrium reaction is,

                 2NH_3(g)\rightleftharpoons N_2(g)+3H_2(g)

Initial conc.            x                0           0

At eqm. conc.     (x-2y) M     (y) M   (3y) M

The expression for equilibrium constant for this reaction will be:

3y = 0.729 M

y = 0.243 M

K_c=\frac{[y]\times [3y]^3}{[x-2y]^2}

Now put all the given values in this expression, we get :

K_c=\frac{0.243\times (0.729)^3}{(x-2\times 0.243)^2}

0.967=\frac{0.243\times (0.729)^3}{(x-2\times 0.243)^2}

x=0.80

concentration of NH_3 in the equilibrium mixture = 0.80-2\times 0.243=0.31

Thus concentration of NH_3 in the equilibrium mixture is 0.31 M

3 0
3 years ago
What is the formula for Silver (I) chloride?
Kisachek [45]
The formula for Silver (I) chloride is: AgCl
6 0
3 years ago
Read 2 more answers
Is zinc an example of a element or compound?
Lerok [7]

Answer:

Zinc is an <em>element</em>.

Explanation:

Compounds are composed of two or more elements

3 0
3 years ago
Read 2 more answers
What energy is it when you flip on a switch on a lamp
Natalka [10]
Electric energy converted to light energy
3 0
3 years ago
Which of the following formulas represents an ionic compound?
Marta_Voda [28]

Answer:

BaI2

Explanation:

Hello, since the electronegativity of Barium and Iodine are 0.89 and 2.66, respectively, the difference is 1.77, so the bond is ionic.

Best regards.

5 0
4 years ago
Other questions:
  • 1. A student tried to solve the following problem by selecting the tile as shown. What, if anything, did the student do wrong?
    14·1 answer
  • Which of the following is formed from erosion
    9·2 answers
  • As the frequency of a wave increases, the energy...
    6·1 answer
  • Why does permeable rock weather more than less permeable rock
    7·2 answers
  • These are the reactants in the chemical equation 2 H2 + 02 --&gt; 2 H20
    9·1 answer
  • If the molecule C6H12 does not contain a double bond, and there are no branches in it, what will its structure look like?
    10·1 answer
  • If you moved closer and closer to a star, how would its absolute magnitude change?
    10·2 answers
  • Is sodium potassium nitrate exo or endo?​
    10·2 answers
  • Which is not a type of nuclear decay?<br> A. Zeta<br> B. Gamma<br> C. Alpha<br> D. Beta
    15·1 answer
  • .400 moles of CO2 gas are confined in a 5.00-liter container at 25 °C. Calculate the pressure exerted in atmospheres and mm Hg.
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!