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
never [62]
3 years ago
13

The fossil record provides evidence of past life as well as clues to the past climate, environment, and abiotic factors in an ar

ea. True or false
Chemistry
2 answers:
Tatiana [17]3 years ago
8 0
The answer would be true.
murzikaleks [220]3 years ago
5 0
That is true because fossils can tell many things. 
You might be interested in
A chemist determines by measurements that moles of nitrogen gas participate in a chemical reaction. Calculate the mass of nitrog
Likurg_2 [28]

Answer:

0.56 g

Explanation:

<em>A chemist determines by measurements that 0.020 moles of nitrogen gas participate in a chemical reaction. Calculate the mass of nitrogen gas that participates.</em>

Step 1: Given data

Moles of nitrogen gas (n): 0.020 mol

Step 2: Calculate the molar mass (M) of nitrogen gas

Molecular nitrogen is a gas formed by diatomic molecules, whose chemical formula is N₂. Its molar mass is:

M(N₂) = 2 × M(N) = 2 × 14.01 g/mol = 28.02 g/mol

Step 3: Calculate the mass (m) corresponding to 0 0.020 moles of nitrogen gas

We will use the following expression.

m = n × M

m = 0.020 mol × 28.02 g/mol

m = 0.56 g

4 0
3 years ago
An example of an ____ reaction is when metals react with oxygen to form metal _____.​
Reptile [31]

<em>An example of a</em><em>n</em><em> </em><em><u>exothermic</u></em><em> </em><em>reaction is when metals react with oxygen to form metal</em><em> </em><em><u>Oxides</u></em>

<em><u>Hope</u></em><em><u> </u></em><em><u>this</u></em><em><u> </u></em>helped you- have a good day bro cya)

4 0
3 years ago
What is the energy of a photon of green light with a frequency of 5.80 x 10^14/s
dedylja [7]
I'm not understanding that much. but if i'm right the answer is <span>3.84 x 10^-19 J</span>
8 0
4 years ago
Iodine chloride, ICl, can be made by the following reaction between iodine, I2, potassium iodate, KIO3, and hydrochloric acid.
Vadim26 [7]
The balanced chemical reaction is:

<span>2 I2 + KIO3 + 6 HCl ---------> 5 ICl + KCl + 3 H2O 
</span>
We are given the amount of the product to be produced from the reaction. This will be the starting point of our calculations.

28.6 g ICl (1 mol / 162.35 g ICl ) ( 2 mol I2 / 5 mol ICl ) ( 253.81 g I2 / 1 mol I2 ) = 17.88 g I2
6 0
3 years ago
Read 2 more answers
What is the energy of a microwave photon that has a frequency of 9.86 x 1012 Hz?
BlackZzzverrR [31]

Answer:

6.533 × 10^-21J

Explanation:

The energy of the microwave photon can be calculated using:

E = hf

Where;

E = energy of photon (J)

h = Planck's constant (6.626 × 10^-34 J/s)

f = frequency (9.86 x 10^12 Hz)

Hence, E = hf

E = 6.626 × 10^-34 × 9.86 x 10^12

E = 65.33 × 10^(-34 + 12)

E = 65.33 × 10^(-22)

E = 6.533 × 10^-21J

The energy of the microwave photon is

6.533 × 10^-21J

5 0
3 years ago
Other questions:
  • Most scientific questions are based on opinions. hypotheses. observations. experimental dat
    14·1 answer
  • A chemical or physical change that takes in heat from its surroundings is an exothermic process an explosion an endothermic proc
    14·2 answers
  • You were instructed to add 1.0 mL out of 4.0 mL of an undiluted sample to 99 mL of sterile diluent. Instead, you add the entire
    11·1 answer
  • Write a balanced chemical equation for the combustion reaction of hydrogen and oxygen to give water
    6·1 answer
  • What statement describes a good scientific question? Check all that apply.<br>Please help mee!​
    8·1 answer
  • An atom with high ionization energy will form a positive ion more easily than an atom with low ionization energy. True False
    6·1 answer
  • 5.
    10·1 answer
  • Help I will mark brainliest
    11·1 answer
  • What are the half-reactions for a galvanic cell with aluminum and gold electrodes?
    14·1 answer
  • Write a lab report for this lesson’s lab. Be sure that your report:
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!