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
Masja [62]
3 years ago
7

How many stars are in the galaxy

Chemistry
2 answers:
lina2011 [118]3 years ago
7 0

100 billion to 400 billion

fomenos3 years ago
5 0

Answer: 100 billion

Explanation: Astronomers have estimated there is anywhere between 100 and 400 billion stars in the milky way.

You might be interested in
Consider the reaction of NO and CO to form N2 and CO2, according to the balanced equation: 2 NO (g) + 2 CO (g) → N2 (g) + 2 CO2
Gekata [30.6K]

The image is not given in the question, it is attached below:

<u>Answer:</u> The excess reactant is NO, the limiting reactant is CO and the products are shown in the image attached below.

<u>Explanation:</u>

In the given image:

Red spheres represent oxygen atoms, blue spheres represent nitrogen atoms and black spheres represent carbon atoms

The combination of 1 black and 2 red spheres will represent carbon dioxide (CO_2) compound

The combination of 2 blue spheres will represent nitrogen molecule (N_2)

The combination of 1 blue and 1 red sphere will represent nitrogen monoxide (NO) compound

The combination of 1 black and 1 red sphere will represent nitrogen monoxide (NO) compound

Limiting reagent is defined as the reagent which is completely consumed in the reaction and limits the formation of the product.

Excess reagent is defined as the reagent which is left behind after the completion of the reaction.

We are given:

Given moles of NO = 6 moles

Given moles of CO = 4 moles

For the given chemical equation:

2NO(g)+2CO(g)\rightarrow N_2(g)+2CO_2(g)

By stoichiometry of the reaction:

If 2 moles of CO reacts with 2 moles of NO

So, 4 moles of CO will react with = \frac{2}{2}\times 4=4mol of NO

As the given amount of NO is more than the required amount. Thus, it is present in excess and is considered as an excess reagent.

Thus, CO is considered a limiting reagent because it limits the formation of the product.

Hence, the excess reactant is NO, the limiting reactant is CO and the products are shown in the image attached below.

3 0
3 years ago
When electrons are added to the outermost shell of a carbon atom, it forms
jenyasd209 [6]
I believe it forms an anion that has a larger radius.
3 0
3 years ago
Read 2 more answers
What information is needed to determine the velocity of an elevator?
cupoosta [38]

Answer:

Velocity is vector quantity. So it needs <em>direction</em> in addoition to <em>speed</em>.

The velocity of an object is the rate of change of its position with respect to a frame of reference, and is a function of time. Velocity is equivalent to a specification of its speed and direction of motion.

7 0
3 years ago
Does anybody know the answer if so explain
a_sh-v [17]

Answer:

synthesis

Explanation:

I believe answer is d a synthesis reaction

5 0
3 years ago
D 5. Choose the correct answer.
Gnom [1K]

Answer:

from where should I have to chose

8 0
3 years ago
Other questions:
  • Identify unit of measure would be most appropriate to measure the distance between two planets in our solar system
    8·1 answer
  • Draw the structure for cis-2,3-dibromo-2-hexene.
    13·2 answers
  • Calculate the [H3O+] of an aqueous solution that is 2.42 × 10−7 M in OH−.
    15·1 answer
  • Someone plzzzzzzzzzzzzzzz help me
    12·2 answers
  • Copper has a density of 8.96 g/cm3. If 75.0 g of copper is added to 50.0 mL of water in a graduated cylinder, to what volume rea
    15·1 answer
  • You titrate 25.00 mL of the lemon-lime Kool-Aid (with KI, HCl, and starch) with 0.001000 M KIO3(aq) solution. The titration requ
    15·1 answer
  • Balance this compound
    7·2 answers
  • The sugar deoxyribose is an important component of DNA. Deoxyribose is 44.8% 7.5% H, and 47.7% O by mass. What is the empirical
    5·1 answer
  • ___________ are the building blocks for DNA and RNA
    6·1 answer
  • Elements in the same period share the same number of:
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!