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
ch4aika [34]
3 years ago
5

How can animal fossils help us understand the earth​

Chemistry
1 answer:
Alex17521 [72]3 years ago
7 0

Answer:

Some animals and plant are only known to us as fossils. hope this helps. and have a nice day:)

You might be interested in
HELP! WILL GIVE BRAINLY!!!
Contact [7]

Answer:

True

Density = mass/volume

Suppose that a block has a mass of 20 g and a volume of 20 cm^3.

Density = 20 g/20 cm^3 = 1 g/cm^3

Now, you cut the block in half. The half-block has a mass of 10 g and a volume of 10 cm^3.

The density of the half-block is

Density = 10 g/10 cm^3 = 1 g/cm^3

The density stays the same, even though the size of the sample has changed.

Explanation:

4 0
3 years ago
Read 2 more answers
The density of platinum is 21.45 g/cm3. What is the volume of a platinum sample with a mass of 11.2 g?
Paraphin [41]

Answer: 0.522cm3

Explanation:

Mass = 11.2g

Density = 21.45 g/cm3

Volume =?

Volume = Mass /Density

Volume = 11.2 / 21.45

Volume = 0.522cm3

3 0
3 years ago
At 800 K, the equilibrium constant, Kp, for the following reaction is 3.2 × 10–7. 2 H2S(g) ⇌ 2 H2(g) + S2(g) A reaction vessel a
djverab [1.8K]

Answer:

0.008945 atm

Explanation:

In the reaction:

2H2S(g) ⇌ 2 H2(g) + S2(g)

Kp is defined as:

Kp = P_{H_{2}}^2P_{S_{2}} / P_{H_{2}S}^2

<em>Where P is the pressure of each compound in equilibrium.</em>

If initial pressure of H2S is 3.00atm, concentrations in equilibrium are:

H2S = 3.00 atm - 2X

H2 = 2X

S2: = X

Replacing:

3.2x10^{-7} = (2X)^2X / (3-2X)^2

3.2x10^{-7} = 4X^3 / 9- 6X+4X^2

0 = 4X³ - 1.28x10⁻⁶X² + 1.92x10⁻⁶X - 2.88x10⁻⁶

Solving for X:

X = 0.008945 atm

As in equilibrium, pressure of S2 is X, <em>pressure is 0.008945 atm</em>

7 0
3 years ago
250 संतरे में से 50 संतरे एक कक्षा में बाँट दिए गए, तो कितने प्रतिशत संतरे बचे <br>1. 80%<br>2.25%​
vagabundo [1.1K]

Answer:

80% left thanks hope ur day will fine

8 0
3 years ago
For the equation BaCl2 + Na2SO4 → BaSO4 + 2NaCl, how many chlorine atoms are on the reactants side and on the products side? rea
FinnZ [79.3K]

Answer:

2 reactants 2 products.

this is a balanced chemical equation. That means the number of chlorine before the arrow will be the same after the arrow

3 0
3 years ago
Read 2 more answers
Other questions:
  • On a cold morning, the smoke coming out of a chimney is observed to be in blue color. What could be the reason? Name the effect
    13·1 answer
  • According to the law of conservation of matter, the number of ________ is not changed by a chemical reaction.
    9·2 answers
  • Thehalf life of carbon is 5730 years. how many years would it take a 200 gram sample to Decay to only 25 G?​
    9·1 answer
  • Which of the following is true about two neutral atoms of the element gold? (1 point) The nucleus is missing in both. Each has a
    12·1 answer
  • What property allows metals to be shaped into a musical instrument?
    11·1 answer
  • Which inorganic substance taken up by plants is also taken in and used directly by animals, including humans?
    11·2 answers
  • This is what the map is for question 4
    14·1 answer
  • Why the ph of glycine increases when 0.1 M NaOH is added dropwise​
    6·1 answer
  • Draw a Lewis structure for ketene, C2H2O , which has a carbon‑carbon double bond. Include all hydrogen atoms and show all unshar
    8·1 answer
  • Please answer the question for the points (10)
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!