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
alina1380 [7]
3 years ago
7

I need help on these questions please!!! the link for the vid will be in the comments

Chemistry
1 answer:
Ilia_Sergeevich [38]3 years ago
7 0
I don’t see the video but I can still answer number 2! One example is when you boil water it evaporates as it gets hot. Another example is when you take a shower, the water on your body evaporates as you dry!
You might be interested in
A glycosidic bond between two monosaccharides can also be classified as a(n) ________.
Natali5045456 [20]

<span>Here we are asked to know the type of bond between a  glycosidic bond. A glycosidic bond is a type of bond that exists between a carbohydrate molecule to another carbohydrate molecule. A glycosidic bond creates between two monosaccharides can also be called as an ether bond.</span>

8 0
3 years ago
What is Density?:
Kryger [21]

Answer:

Density is defined as how tightly or loosely packed a substance is, or to the number of things or people in a certain area.

3 0
3 years ago
The half-life of bismuth-210, 210bi, is 5 days. (a) if a sample has a mass of 184 mg, find the amount remaining after 15 days.
ASHA 777 [7]

Answer:- 23.0 mg

Solution:- Radioactive decay obeys first order kinetics and the first order kinetics equation is:

lnN=-kt+lnN_0

where, N_0 is the initial amount of radioactive substance and N is it's amount after time t. k is the decay constant.

From given information, Original amount, N_0 of the radioactive substance is 184 mg and we are asked to calculate the amount N after 15 days. It means, t = 15 days

Half life is given as 5 days. From the half life, we could calculate the decay constant k using the equation:

k=\frac{0.693}{t_1_/_2}

where, t_1_/_2 is the symbol for half life. let's plug in the value of half like to calculate k:

k=\frac{0.693}{5days}

k=0.1386day^-^1

Let's plug in the values in the first order kinetics equation and solve it for N:

lnN=-0.1386day^-^1(15days)+ln184mg

lnN=-2.079+5.215

lnN = 3.136

N=e^3^.^1^3^6

N = 23.0 mg

So, 23.0 mg of Bi-210 would be remaining after 15 days.

3 0
4 years ago
Explain how the colors of the visible light spectrum are organized using the terms wavelength and frequency.
Eddi Din [679]

Answer:

Visible light spectrum is a part of electromagnetic waves.  The colors of the visible light spectrum are organised on the basis of their wavelength and frequency.

As the light or color having high frequency will have the shorter wavelength and vice versa, so  colors in visible light spectrum arranged from highest frequency to lowest frequency or from shortest wavelength to highest wavelength. For example: The highest frequency color is violet and lowest frequency of visible light is red.

3 0
3 years ago
Group 18 noble gases are relatively inert because *
choli [55]

Answer:I believe its A. There noble gasses so there happy with there electron count!

Explanation:

3 0
3 years ago
Other questions:
  • Ha is a monoprotic weak acid. if a 0.015 m ha solution is 2.5% dissociated (or ionized), what is the acid dissociation constant
    14·1 answer
  • The table shows the chemical formulas for four substances. Which substance have the same numbers of carbo atoms?
    11·1 answer
  • The statement "A hippophant does not exist " is a​
    9·1 answer
  • If a sample of gas has a volume of 100.0ml when the pressure is 50.0kPa, what is volume when the pressure is increased to 400.0k
    13·1 answer
  • What do molarity and molality have in common?
    9·1 answer
  • Describe the result of your procedure with both the coin and the nail. Include the reverse procedure you did with the coin
    5·1 answer
  • K2SO3(aq)+MnCl2(aq)→MnSO3(s)+KCl(aq)
    14·2 answers
  • Select the pH value you would expect for each of these solutions.
    8·1 answer
  • Question 1
    15·1 answer
  • How many cis trans isomers does gammalinoleic acid has
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!