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
LUCKY_DIMON [66]
3 years ago
5

Is the earth older than any of they rock layers

Chemistry
2 answers:
Naya [18.7K]3 years ago
7 0
No because in order for the earth those layers had to be there first.
Zanzabum3 years ago
6 0

Answer:

no the rock was formed before the layers that we life on today

Explanation:

You might be interested in
A solution
timurjin [86]
The answer to your question is  C.  A solution is a homogeneous mixture composed of two or more substances, so it couldn't have been A and D. Since a solution can't have its substances separated by a chemical means because they are chemically bonded, thus they are able to be separated by physical means 
3 0
3 years ago
What sample size (grams) of Na3PO4 (FW 164.00) known to be 50.00% pure should be used to consume exactly 40.00 mL of 0.1000 M HC
Mkey [24]

Answer:

0.109 g.

Explanation:

Equation of the reaction:

Na3PO4 + 3HCl --> 3NaCl + H3PO4

Number of moles of HCl = molar concentration × volume

= 0.1 × 0.04

= 0.004 mol.

By stoichiometry, 1 mole of Na3PO4 neutralises 3 moles of HCl. Therefore, number of moles of Na3PO4 = 0.004/3

= 0.0013 mol

Mass of Na3PO4 = molar mass × number of moles

= 0.0013 × 164

= 0.219 g

Since 50% of Na3PO4 was present in the sample. Let 100 g be the total mass of the substance

= 0.219 × 50 g/100 g

= 0.109 g.

3 0
3 years ago
Name the following compound: HNO3
galben [10]
Im pretty sure it nitric acid
5 0
3 years ago
What is the scaling factor if the molar mass of
Step2247 [10]

Answer:

The scaling factor is 5.

Explanation:

Hello there!

In this case, since the scaling factor is defined as the ratio of the molar mass of the molecular formula (complete) to the empirical formula (simplified), it is possible to compute it for the empirical formula of CH2O whose molar mass is 30 g/mol (12+2+16) as shown below:

sf=150/30=5

Therefore, we can also infer that the molecular formula would be:

C_5H_1_0O_5

Best regards!

6 0
3 years ago
HELPP!!
ikadub [295]

Answer: C. CO₂ and H₂O

Explanation:

Combustion reactions produce carbon dioxide and water.

3 0
2 years ago
Other questions:
  • Changing the number of _____ would change an atom into an atom of a different element. changing the number of _____ would change
    11·1 answer
  • Which picture shows the correct flow of electrical current
    8·2 answers
  • Can someone help me to answer the questions 8 and 9
    13·1 answer
  • Heterogeneous mixture with larger particles that never settle
    11·1 answer
  • What type of reaction is represented by the following chemical equation?
    12·3 answers
  • Which phrase best describes how scientists use the data they collect
    7·2 answers
  • The__ contains all the elements l, arranged according to similarities in their properties​
    11·1 answer
  • Explain the valence differences etc between the two polyatomic ions: nitrate and nitrite.
    14·2 answers
  • NEED HELP ASPA WILL MAKE THE BRAINIEST ANSWER
    14·1 answer
  • 3. Identify the 4 primary pigments found in plant leaves (name and color)
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!