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
Diano4ka-milaya [45]
3 years ago
8

(50 POINTS)THIS IS A TIMED TEST PLEASE ANSWER

Chemistry
1 answer:
ella [17]3 years ago
3 0

Answer:

Please attach pic of the question

You might be interested in
A _____ (released, absorbed, taken, +,-) ΔH means that energy is______ (released, absorbed, taken, +,-) from a reaction.
zalisa [80]
A __"-"___  ΔH means that energy is_released_
4 0
4 years ago
Read 2 more answers
What is the basic unit of structure and function in all living things? a cell b organism c atom d plasma
valkas [14]

Answer:

A. Cell

Explanation:

Cells are basic units of structure and function in living things. This means that cells form the parts or an organism and carry out all of the an organism's processes, or functions.

4 0
3 years ago
Trimethylamine, (CH3)3N is a weak base (Kb = 6.3 × 10–5). What volume of this gas, measured at STP, must be dissolved in 2.5 Lof
9966 [12]

Answer:

8.9L is the volume of the gas that must be dissolved.

Explanation:

For a weak base, we can find [(CH₃)₃N] using the equation:

Kb = [OH⁻] [[(CH₃)₃NH⁺] / [(CH₃)₃N]

As [OH⁻] = [[(CH₃)₃NH⁺] and [OH⁻] = 10^-pOH = 3.16x10⁻³M:

6.3x10⁻⁵ = [3.16x10⁻³M][3.16x10⁻³M] / [(CH₃)₃N]

[(CH₃)₃N] = 0.1587M

As the volume is 2.5L, moles are:

2.5L * (0.1587mol / L) = 0.3968moles

Using:

PV = nRT

We can solve for volume of the gas as follows:

P = 1atm at STP; n = 0.3968moles; R = 0.082atmL/molK; T = 273.15K at STP

V = 0.3968mol*0.082atmL/molK*273.15K/1atm

V = 8.9L is the volume of the gas that must be dissolved.

3 0
3 years ago
According to Newton's First Law of Motion, what does it take to move an object at rest?
Flauer [41]

It will be B.) A force equal to the force keeping the object at rest, but in the opposite direction.


3 0
3 years ago
. What is the acceleration of a 25.05 kg mass being pushed by a 10.0 N force?
Radda [10]

What is the acceleration of a 10 kg mass pushed by a 5 N force? The acceleration due to gravity on the moon is 1.6 m/s2. Your mass is 60 kg.

4 0
3 years ago
Other questions:
  • What is a collection of organs whose primary function is to take in oxygen
    10·1 answer
  • A 3.31-g sample of lead nitrate, pb(no3)2, molar mass = 331 g/mol, is heated in an evacuated cylinder with a volume of 2.11 l. t
    13·1 answer
  • Q1:What is one result of meiosis?
    5·1 answer
  • The name for C2H6 is dicarbon heptahydride.<br><br> TRUE<br><br> FALSE
    5·2 answers
  • A hereditary condition caused by an incorrect amino acid in a protein chain is what
    10·1 answer
  • A reaction involves the following elementary steps:
    8·1 answer
  • The method used to determine the equivalence point of an acid-base solution is called: neutralization precipitation titration hy
    5·2 answers
  • What is the difference between mass and weight?
    8·1 answer
  • Chase had determined the boiling point of an unknown liquid to be 45.2 ⁰C when the correct boiling point is 44.32 ⁰C. What is th
    14·1 answer
  • The dark areas on the map show the distribution of coral reefs around the world. What explanation best
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!