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
vodka [1.7K]
3 years ago
9

BRAINLIEST!!! PLZ HELP

Chemistry
1 answer:
Naily [24]3 years ago
7 0
Why you put 5 points?
You might be interested in
Magnetism is an example of a property of what?
Setler79 [48]

Answer:

A) behavior

Explanation:

6 0
3 years ago
What makes isotopes unstable?
Dennis_Churaev [7]

Answer:

Explanation:

Many elements have one or more isotopes that are radioactive these are called radioisotopes their their nuclei are unstable so they break now or decay and emit radiation

8 0
3 years ago
Read 2 more answers
What are the unique and important properties of water
kkurt [141]

Explanation:

Water molecules are polar, so they form hydrogen bonds. This is a unique property of water. Water has an unique boiling point and high polarity.

5 0
3 years ago
Determine the value of k' from the slope. These graphs were plotted in terms of absorbance, but the rate constant should be in t
dolphi86 [110]

Answer:

k' = (2.0345 × 10⁻⁸) M/s.

Explanation:

Beer-Lambert's law explains that Absorbance is directly proportional to the concentration of the substrate under consideration.

A ∝c

A = εlc

where ε = molar absorptivity constant = 87,000 M⁻¹cm⁻¹

l = path length of the solution that the light passes through in cm = 1 cm for most cases.

c = concentration of the substrate.

In terms of rate terms,

A' = εlc'

where A' has units of Absorbance/s

c' = rate of reaction, units of concentration/s

A' = εlc'

From the graph, the slope of the graph = 0.00177 Absorbance/s

0.00177 = 87000 × 1 × c'

c' = (0.00177/87000)

c' = (2.0345 × 10⁻⁸) M/s.

This value is the pseudo rate constant, k'.

Hope this Helps!!!

8 0
3 years ago
6. A student dissolved 1.1 g of solid NaOH in 22.1 mL of water inside a constant-pressure
mote1985 [20]

From the calculations, the heat of the reaction is 44.4 kJ/mol.

<h3>What is the enthalpy of reaction?</h3>

The enthalpy of reaction refers to the amount of heat that is absorbed or evolved in a reaction.

Number of moles of NaOH = 1.1 g /40 g/mol = 0.0275 moles

Mass of the water = 22.1 mL or 22.1 g

Given that;

H= mcdT

H = 22.1 g *4.184 * (31.4 - 18.2)

H = 1221 J or 1.221kJ

ΔH rxn = -(1.221kJ)/0.0275 moles

ΔH rxn = 44.4 kJ/mol

Learn more about enthalpy:brainly.com/question/15319033

#SPJ1

8 0
2 years ago
Other questions:
  • The volume of a gas is the same as its _____.
    5·2 answers
  • What maximum fraction of the air in the room could be displaced by the gaseous nitrogen?
    11·1 answer
  • What is the density of a liquid if it has a mass of 12.9g ?
    8·1 answer
  • Please help fast!!
    12·2 answers
  • Solution A is 0.44 M and reacts with 0.11 M of solution B. Assume that the value of x is 0, the value of y is 1, and r is 1.07 ×
    8·1 answer
  • 3. ¿Cuál de las siguientes operaciones es correcta para calcular el número de moles de hidrógeno necesarios para producir 6 mole
    14·1 answer
  • Given 9.0 moles of O2, how many grams of H2O can be produced ?
    8·1 answer
  • What has more particles: a mole of hydrogen or a mole of uranium?
    14·1 answer
  • Photosynthesis is the reaction by which green plants convert water and carbon dioxide into glucose and oxygen using sunlight (ra
    14·1 answer
  • Find the mole fraction of Methanol CH3OH and water in a solution prepared by dissolving 4.5 g of alcohol in 40 g of H2O.
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!