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
Pani-rosa [81]
2 years ago
12

if a star is located 100 light years away from earth, how long does it take for its light to reach the earth

Chemistry
1 answer:
olga55 [171]2 years ago
8 0
If a star is located 100 light years from Earth, the light will take 100 years to reach Earth.
I hope this helps !
You might be interested in
You react 2.33 g of iron (III) chloride with 50.0 mL of 0.500 M solution of sodium phosphate to
nikklg [1K]

Answer:

2.33g of iron (iii) chloride

50.0 mL of 5.00 M of sodium phosphate

FeCl3 + Na3PO4 > Fe(PO4) + 3NaCl

mol = conc × vol = 0.5 × 50/1000 = 0.025 mol Na3PO4

from the equation:

1 mol of Na3PO4 reacts with 1 mol FeCl3 = 3 mol of NaCl

0.025 mol = x

x = 0.0025 × 3 = 0.075 mol NaCl

mass = 0.075 g × 59 g/mol = 4.425 g NaCl

i guessed all of this so i dont know i it is correct

3 0
2 years ago
Choose all the answers that apply.
Anni [7]

Answer:

I believe it's the lowest portion of the atmosphere

3 0
2 years ago
Give the conjugate acid for each compound below. co3^2-
DENIUS [597]
A conjugate acid is a conjugate base with hydrogen ions attached to it. In this case, the conjugate base is the carbonate ion, CO₃⁻². This ion can have two hydrogen ions, so the conjugate acid is:

H₂CO₃

This compound is known as carbonic acid.
7 0
3 years ago
How many moles of tungsten (W,183.85 g/lol are in 415 grams of tungsten?
vladimir1956 [14]

Given mass of tungsten, W = 415 g

Molar mass of tungsten, W = 183.85 g/mol

Calculating moles of tungsten from mass and molar mass:

415 g * \frac{1 mol}{183.85 g} = 2.26 mol W

7 0
2 years ago
If the air temperature is the same as the temperature of your skin (about 30◦C), your body cannot get rid of heat by transferrin
Elenna [48]

Answer:

Explanation:

a )

energy produced per second = 500 J

Heat produced = 500 x .8 = 400 J per second.

If m be the mass of water evaporated per unit hour

m x latent heat = 400 x 60 x 60

= m x 2.42 x 10⁶ = 1.44 x 10⁶

m = .595 kg per hour

b )

volume of water = 595 mL

bottles = 595 / 750

.8 or 4/5 of bottle. per hour.

8 0
3 years ago
Other questions:
  • How many moles of carbon in 6.64 moles of CCl2 F
    13·1 answer
  • Which of the following is and example of a chemical change
    13·1 answer
  • Which of the following is not an example of a molecule?
    14·2 answers
  • How are bases named?
    14·2 answers
  • How many molecules are in 7.34 g of Na2CO3
    12·1 answer
  • 2.00 mL of a 12.00 M HCL solution was reacted with 0.0450 grams of magnesium.?
    5·1 answer
  • Identify the major force between molecules of pentane and hexane
    14·1 answer
  • PLS HELP NO LINKS PLS<br> What is the pH of normal rainfall?
    11·2 answers
  • What is the mass of 1.20 x 10^25 atoms of He
    7·1 answer
  • Plsssss give me answer<br>​
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!