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
Bond [772]
3 years ago
9

What Will We Do? We will determine if a pen is a system. What function does a pen perform? ​

Chemistry
1 answer:
Annette [7]3 years ago
4 0

Answer:

You are really and i mean very dumb and extremely 100 percent stupid.

Explanation:Yep you sure the most stupidest boy in the world.

Download docx
<span class="sg-text sg-text--link sg-text--bold sg-text--link-disabled sg-text--blue-dark"> docx </span>
<span class="sg-text sg-text--link sg-text--bold sg-text--link-disabled sg-text--blue-dark"> docx </span>
You might be interested in
describe in general terms an experiment to determine the molal freezing point depression constant kf of water. Assume the availa
Dvinal [7]
A solution (in this experiment solution of NaNO₃) freezes at a lower temperature than does the pure solvent (deionized water). The higher the solute concentration (sodium nitrate), freezing point depression of the solution will be greater.
Equation describing the change in freezing point: 
ΔT = Kf · b · i.
ΔT - temperature change from pure solvent to solution.
Kf - the molal freezing point depression constant.
b -  molality (moles of solute per kilogram of solvent).
i - Van’t Hoff Factor.
First measure freezing point of pure solvent (deionized water). Than make solutions of NaNO₃ with different molality and measure separately their freezing points. Use equation to calculate Kf.

6 0
3 years ago
I will mark brainliest
Veronika [31]

I believe the answer is B??????????? Hope this helps

~Queensupreme

5 0
3 years ago
Read 2 more answers
If an atom has three shell and number of valence electrons are two. Is this element metal
cluponka [151]

Answer:

Metal

Element: Calcium

Valency: 2

Explanation:

To find the element, let's use the periodic table. (Look below)

We already went past 3 shells, just need the 2 electrons after it.

Just skip to the 4th row and count 2 to the right

We end up at Calcium.

Calcium is a metal and we're also on the alkaline earth metals column.

Calcium will need to lose 2 electrons to reach stability, so the valency is 2.

3 0
3 years ago
Consider the first-order reaction described by the equation At a certain temperature, the rate constant for this reaction is 5.8
zubka84 [21]

<u>Answer:</u> The half life of the reaction is 1190.7 seconds

<u>Explanation:</u>

The equation used to calculate rate constant from given half life for first order kinetics:

t_{1/2}=\frac{0.693}{k}

where,

k = rate constant of the reaction = 5.82\times 10^{-4}s^{-1}

t_{1/2} = half life of the reaction = ?

Putting values in above equation, we get:

t_{1/2}=\frac{0.693}{5.82\times 10^{-4}s^{-1}}=1190.7s

Hence, the half life of the reaction is 1190.7 seconds

8 0
3 years ago
9. Which series shows levels of organization in order from the smallest to the largest
erastova [34]

Answer:

B. Atom, molecule, cell, organism

Explanation:

Atoms make up molecules. Molecules make up cells. Cells make up tissue. A number of tissues working together creates an organ. Multiple organs working together creates an organ system. Organ systems working together creates one happy, functioning organism. :)

8 0
3 years ago
Other questions:
  • The key on a pie chart represents...
    10·2 answers
  • In the example in the lesson, 0.10 mole of sodium chloride or magnesium chloride or aluminum chloride was added to one liter of
    14·2 answers
  • During an experiment a student measured the temperature of water while it boiled in a pot on a stove. The temperature of the wat
    13·2 answers
  • Determine the number of bonding electrons and the number of nonbonding electrons in the structure of SeCl2.
    10·1 answer
  • I have a rock with the mass of 4.8 and a volume of 2.3.
    12·2 answers
  • A scientist is observing a cell in notices the presence of starch what does this tell her about the cell
    7·1 answer
  • When we react a weak acid with a strong base of equal amounts and concentration, the component of the reaction that will have th
    13·1 answer
  • after learning about several of the body systems, John tells the class that the digestive system and respiratory system have one
    13·1 answer
  • Anyone want to go on a da.te??​
    10·1 answer
  • How many molecules of N2O5 are there in 175 grams of N2O5?
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!