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
DaniilM [7]
3 years ago
5

Please help guys if you know it!

Chemistry
1 answer:
iogann1982 [59]3 years ago
4 0
The second one is correct
You might be interested in
How many electrons would an uncharged atom of nitrogen have
dybincka [34]
The atomic number represents the number of protons in an atom's nucleus. In an uncharged atom, the number of protons is always equal to the number of electrons. For example, carbon atoms include six protons and six electrons, so carbon's atomic number is 6.
3 0
3 years ago
While in Europe, if you drive 109 km per day, how much money would you spend on gas in one week if gas costs 1.10 euros per lite
MrRissso [65]

Answer:

The amount is x  =  113.3 \  dollars

Explanation:

From the question we are told that

     The  distance traveled per day is  l  =  109\ km =  \frac{109}{1.609}  =  67.74 \  mi

    The  cost of one liter is  c =  1.10 \ euros/liter = 1.10  *  1.26  = 1.36 \ dollars/liter

     The car's  gas mileage is  b =  22.0 \ mi/gal

Generally the amount of distance covered in one week is evaluated as

      z =  67.74 * 7

       z = 474.18 \  mi

The  amount of gas used in one week by the car is mathematically represented as  

       k  = \frac{ z}{ b}

=>    k  = \frac{ 474.18}{ 22}

=>      k  =  22 \ gal

converting to liters

          k =  22 *  3.78541=83.28 \ liters

Thus the amount spent on gas in one week is  

          x =  k *  c

=>      x  =  83.28 *  1.36

=>      x  =  113.3 \  dollars

 

5 0
3 years ago
in the event of a submarine disaster the___ can be used to rescue people from the depth up to 3500 feet.
gulaghasi [49]
DSVR because it only makes sense. Try it out and if it works give me a Brainly


6 0
3 years ago
Read 2 more answers
_______is the division of the cytoplasm at the end of mitosis.
tankabanditka [31]

Answer: D. CYTOKINESIS

Explanation:

Mitosis<em> </em>ends<em> with telophase, or the stage at which the chromosomes reach the poles. ... Telophase is followed by </em>CYTOKINESIS<em>, or the division of the cytoplasm into two daughter </em><em>cells.</em>

6 0
3 years ago
How many molecules are in 643.21 grams of Mg3(PO4)2?
Eva8 [605]

Answer:

643.21g  1 mol  6.022^23

262.87 g   1 mol

= 1.4735E24     [Mg3(PO4)2]

4 0
2 years ago
Other questions:
  • 11. Many metals are described as ductile, which means they can be
    11·1 answer
  • A salt crystal has a mass of 0.11 mg. How many NaCl formula units does it contain? Express your answer using two significant fig
    14·1 answer
  • How to calculate average mass in grams?
    11·1 answer
  • A sample of oxygen gas has a volume of 36.7 L at 145 kPa and 65. ̊C. What volume will the sample have at STP?
    11·1 answer
  • As a medication, Chang's doctor prescribed him a drug with serious restrictions. However, Chang started overdosing on it. This a
    7·1 answer
  • This is a mixture that has the same composition throughout.
    11·1 answer
  • Liquid water is about 800 times denser than dry air under standard conditions. Use kinetic molecular theory to explain this diff
    14·1 answer
  • What are the building blocks of all matter that cannot be broken down any further into other substances?
    5·2 answers
  • What mass of glucose would you need (in g) to have 0.8 mol, given that the molar mass of glucose is 180 g mol-1?
    9·1 answer
  • What volume of SO2, at room temperature and pressure is produced on heating 9.7g
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!