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
AnnyKZ [126]
4 years ago
9

20 points

Chemistry
1 answer:
poizon [28]4 years ago
5 0

Answer:

1, 4, 1,5

Explanation:

1 PCl5 + 4 H2O → 1 H3PO4 + 5 HCl

You might be interested in
Trial 12 1.Volume of Acid used ( mL) 2020 2.Molarity of acid used (M) 0.0160.016 3.Initial volume reading of base buret 018.6 4.
arsen [322]

Answer:

V_B = 18.3mL -- Volume of base used

M_B = 0.0175M --- Molarity of base

Explanation:

Given

V_A = 20mL -- Volume of acid used

V_B_1 = 18.6mL --- Buret Initial reading

V_B_2 = 36.9mL --- Buret Final reading

M_A = 0.016M --- Molarity of the acid

Solving (a): Volume of base used (VB)

This is calculated by subtracting the initial reading from the final reading of the base buret.

i.e.

V_B = V_B_2 - V_B_1

V_B = 36.9mL - 18.6mL

V_B = 18.3mL

Solving (b): Molarity base (MB)

This is calculated using:

M_A * V_A = M_B * V_B

Make MB the subject

M_B = \frac{M_A * V_A }{V_B}

This gives:

M_B = \frac{0.016M *20mL}{18.3mL}

M_B = \frac{0.016M *20}{18.3}

M_B = \frac{0.32M}{18.3}

M_B = 0.0175M

Solving (c): <em>There is no such thing as average molarity</em>

5 0
3 years ago
Which of the following is released during cellular respiration?: a. oxygen b. air c. energy d. lactic acid
mezya [45]

Explanation:

lactic acid because of the acid it will release in the cellular respiration

6 0
3 years ago
The lipid portion of a typical bilayer is about 30 Å thick. a) Calculate the minimum number of residues in an α-helix required t
Mrrafil [7]

Answer:

a) The minimum number of residues in alfa helix to span 30 Å, is 20 residues

b) The minimum number of residues in a Beta sheet to span 30 Å, is 8.6 residues.

c) Should be better if you show an image to do this question.

d) Look answer below.

Explanation:

a) Due to every 5,4 Å there are 3,6 residues. So doing the calculus give us 20 residues.

b)  That’s it because every 7 Å there are 2 residues

c) First of all, is important to know that the residues of a protein define the secondary structure due to intermolecular and intramolecular interactions. Taking in account that the membrane bilayer has a lipid interior α-helical domains which are hydrophobic principally are embedded in membranes by hydrophobic interactions with the lipid interior of the bilayer favored by Van der Waals interactions and probably also by ionic interactions with the polar head groups of the phospholipids.

3 0
4 years ago
Substance
Grace [21]

Answer:what are u asking to do?

Explanation:

4 0
3 years ago
Can torque rods desaturate reaction wheels
katrin [286]
Yes, because of the reaction causes
4 0
3 years ago
Other questions:
  • If we take 2.2 grams of CO2, 6.02 X 1021 atoms of nitrogen and 0.03 gram atoms of sulphur , then the molar ratio of C, N, and O
    15·2 answers
  • a test tube full of sulfur dioxide gad was turned upside down in a beaker of water and universal indicator.after a few minutes t
    6·1 answer
  • Areas of the periodic table that contain elements that form cations in ionic compounds.
    8·1 answer
  • The standard enthalpy of reaction for the dissolution of silica in aqueous HF is 4.6 kJ mol–1 . What is the standard enthalpy of
    9·1 answer
  • How many moles of TNT would be detonated if you used 539.88 grams of TNT? The structure of TNT is C7H5N3O6. Round your answer to
    9·1 answer
  • Worth 10<br> Focus on number 2
    7·2 answers
  • The by-product of the chlorination of an alkane is​
    9·1 answer
  • What is formula iron metal?
    13·2 answers
  • Think of an example in which chemical and physical weathering affects a rock
    9·1 answer
  • Calculate the number of moles and the number of grams of the following solution 1. 0L of 0. 50M NaCI
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!