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
mr_godi [17]
3 years ago
11

Which of the following are observations? Select all that apply.

Chemistry
1 answer:
alexdok [17]3 years ago
8 0

Answer:

A and E

Explanation:

Observing means looking or watching with the eyes etc..

You might be interested in
267 moles of NADH are produced by the Citric Acid Cycle (CAC). How many moles of glucose needed to be broken down during glycoly
leva [86]

Answer:

45 moles

Explanation:

From glycolysis, 1 mole of glucose gives 2 moles of pyruvate which undergoes citric acid cycle.

1 mole of pyruvate undergoes citric acid cycle (After conversion to acetyl-CoA) gives 3 moles of NADH.

Also,

2 moles of pyruvate undergoes citric acid cycle (After conversion to acetyl-CoA) gives 6 moles of NADH.

Thus,

6 moles of NADH are produced from 2 moles of pyruvate or 1 mole of glucose.

1 mole of NADH is produced from 1/6 mole of glucose

267 moles of NADH are produced from \frac {1}{6}\times 267 moles of glucose.

<u>Thus, moles of glucose needed to be broken ≅ 45 moles</u>

7 0
4 years ago
The equivalence point in a titration refers to the point when
azamat

Answer:

C) the number of moles of one reactant reacts completely with the moles of the other reactant.

Explanation:

it's right put it

8 0
3 years ago
Read 2 more answers
What is the atomic mass number of an isotope that has an atomic number of 5 and includes 6 neutrons?
irinina [24]

The answer should be; 11

The atomic mass number is found by combining the number of protons and neutrons

Hope this helps :)

8 0
3 years ago
Read 2 more answers
Determine the freezing point of a 0.765 m solution of nitrobenzene in naphthalene. (given: naphthalene Kf = 7.45o C Kg/ mole and
amid [387]

Answer: The freezing point of a 0.765 m solution of nitrobenzene in naphthalene is 74.6^0C

Explanation:

Depression in freezing point is given by:

\Delta T_f=i\times K_f\times m

\Delta T_f=T_f^0-T_f=(80.3-T_f)^0C = Depression in freezing point

i= vant hoff factor = 1 (for non electrolyte such as nitrobenzene)

K_f = freezing point constant = 7.45^0C/m

m= molality  = 0.765

(80.3-T_f)^0C=1\times 7.45\times 0.765

T_f=74.6^0C

Thus the freezing point of a 0.765 m solution of nitrobenzene in naphthalene is 74.6^0C

7 0
3 years ago
C3H2 + 502 + 3 CO2 + 4H20
nordsb [41]

Answer: 6.2 moles

Explanation:

C3H8(g) + 5O2(g) ---> 3CO2(g) + 4H2O(g)

The balanced equation above shows the combustion of propane, C3H8 in oxygen, O2 to yield carbon dioxide, CO2 and water, H2O

The mole ratio of combustion are as follows:

1 mole of C3H8 react to produce 4 moles of H2O

1.55 mole of C3H8 will react to produce Z moles of H2O

To get the value of Z, cross multiply

Z x 1 mole = 1.55 mole x 4 mole

Z = 6.2 moles

Thus, 6.2 moles of water will be produced from 1.55 moles of propane

6 0
4 years ago
Other questions:
  • A Choose... convex concave  lens is used to converge light.
    10·2 answers
  • The boiling temperature of water is so much higher than that of methane because water molecules are
    10·1 answer
  • How do you find molality and molarity?
    6·1 answer
  • What is the name of the giant supercontinent
    7·2 answers
  • Consider the system at equilibrium. 2 H 2 ( g ) + S 2 ( g ) − ⇀ ↽ − 2 H 2 S ( g ) How will increasing the concentration of S 2 s
    14·1 answer
  • Two gas-filled tanks have the same volume, temperature, and pressure. They are identical in every way except that one is filled
    11·1 answer
  • A person's
    5·2 answers
  • If the rate constant for a reaction triples when the temperature rises from 300. K to 310. K, what is the activation energy of t
    13·1 answer
  • IS ANYONE GOOD AT CHEMISTRY?! i need help please lol
    15·1 answer
  • Which compound in each pair is more soluble in water?(c) Silver cyanide or copper(I) iodide
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!