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
agasfer [191]
2 years ago
6

An experiment was conducted to determine the density of a rock sample. The table shows a partial record of the experiment.

Chemistry
1 answer:
mart [117]2 years ago
5 0

Answer: the density of the rock

55.91g/ml

Explanation:

The density of the rock after it had being placed in the cylinder of water so the calculation should look like this:

Volume of water substract the mass of the rock:

And that is 142.5 ml - 86.59g =

Answer 55.91 g/ml

So the density of the rock is 55.91g/ml

You might be interested in
Arsenate (AsO43-) is structurally and chemically similar to inorganic phosphate (PO43-), and many enzymes that act on phosphate
Lapatulllka [165]

Answer:

A) The effect on the net reaction catalyzed by glyceraldehyde is that

The 1-arsen0, 3-phosphoglycerate will decompose without enzymes hence no ATP will be formed in the reaction ( phosphoglycerate Kinase )

B) There will be  no conversion of ADP to ATP from the conversion of glucose to pyruvate hence No balanced overall equation can be derived

C ) Arsenate is very toxic to most organisms and it is used mostly regarded  as poisons during the formation of glycolysis, it forms  1-arsen0, 3-phosphoglycerate which  hinders the formation of ATP because it is unstable and will hydrolyze quickly, this will also lead to the reduction in oxygen in cells thereby leading to the death of cells

Explanation:

A) The effect on the net reaction catalyzed by glyceraldehyde is that

The 1-arsen0, 3-phosphoglycerate will decompose without enzymes hence no ATP will be formed in the reaction ( phosphoglycerate Kinase )

B) There will be  no conversion of ADP to ATP from the conversion of glucose to pyruvate hence No balanced overall equation can be derived

C ) Arsenate is very toxic to most organisms and it is mostly regarded as  poisons during the formation of glycolysis, it forms  1-arsen0, 3-phosphoglycerate which  hinders the formation of ATP because it is unstable and will hydrolyze quickly, this will also lead to the reduction in oxygen in cells thereby leading to the death of cells

4 0
3 years ago
The ka of hypochlorous acid (hclo) is 3.0 ⋅ 10−8 at 25.0 °c. calculate the ph of a 0.0375m hypochlorous acid solution.
Scrat [10]
We can set up an ICE table for the reaction:                      
                      HClO          H+     ClO-
Initial              0.0375       0        0
Change         -x               +x      +x
Equilibrium    0.0375-x     x        x

We calculate [H+] from Ka:     
     Ka = 3.0x10^-8 = [H+][ClO-]/[HClO] = (x)(x)/(0.0375-x)

Approximating that x is negligible compared to 0.0375 simplifies the equation to         
     3.0x10^-8 = (x)(x)/0.0375     
     3.0x10^-8 = x2/0.0375     
     x2 = (3.0x10^-8)(0.0375) = 1.125x10^-9     
     x = sqrt(1.125x10^-9) = 0.0000335 = 3.35x10^-5 = [H+]
in which 0.0000335 is indeed negligible compared to 0.0375.

We can now calculate pH:     
     pH = -log [H+] = - log (3.35 x 10^-5) = 4.47
6 0
3 years ago
Drawing a conclusion derived from knowledge of an established principle is called _____. inductive reasoning abductive reasoning
san4es73 [151]

a.)Inductive Reasoning

is the answer

5 0
2 years ago
Read 2 more answers
Oxygen is needed to produce energy in eukaryotic cells. Which organelle would you think needs oxygen the most
bezimeni [28]
Mitochondria need the most oxygen
5 0
3 years ago
Select the correct answer.
Verizon [17]

Answer:

Your answer is C - Heterogeneous mixture

7 0
3 years ago
Read 2 more answers
Other questions:
  • What is the molar mass of C4H10
    9·1 answer
  • DNA replication results in two identical DNA molecules. What role do DNA helicases have in DNA replication?
    10·2 answers
  • I will give branliest!!!!!! PLEASE ANSWER SOOON! ANSWER ALL QUESTIONS PLEASE EXTRA POINTS TOO
    6·2 answers
  • Which value gives the number of particles in 1 mol of a substance?​
    11·1 answer
  • What is the term for a type of reaction in which an acid and a base react to produce a salt and water?
    10·1 answer
  • Based on the results you observed for the iodine test and Benedict’s test, is it better to detect enzyme activity by measuring t
    10·1 answer
  • If the temperature of a gas is raised from 30°C to 60°C, what happens to the pressure?
    5·1 answer
  • Near the equator, the sun heats the surface strongly, causing warm air to rise steadily. This creates the _________________, an
    6·1 answer
  • How many moles of Ca(NO3)2 are needed to make 1.50 L of a 6.00 molar solution?
    7·1 answer
  • Anybody know what Crystal this is?
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!