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irina1246 [14]
3 years ago
12

Why do scientists publish the results of their invesigation

Chemistry
1 answer:
hram777 [196]3 years ago
6 0

When scientists conduct an experiment and analyze the results, the next step is to write up a report that describes the experiment and the results and submit it for publication in a scientific or medical journal that is “peer reviewed.”

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7.Calculate the volume of nitrogen that reacts with 12dm3 of hydrogen with the volume of both gases measured at rtp:
marta [7]

Answer:

4.03dm³

Explanation:

The reaction expression is given as:

       3H₂   +   N₂   →    2NH₃  

  Volume of hydrogen  = 12dm³  

AT rtp:

             1 mole of gas occupies volume of 22.4dm³  

             x mole of hydrogen will occupy a volume of 12dm³

     Number of moles of hydrogen  = \frac{12}{22.4}   = 0.54mole

From the balanced reaction equation:

            3 mole of hydrogen gas combines with 1 mole of Nitrogen gas

         0.54 mole of hydrogen as will therefore combine with \frac{0.54}{3}   = 0.18moles of nitrogen gas

Since ;

                     1 mole of gas occupies a volume of 22.4dm³

               0.18moles of Nitrogen gas will occupy 0.18 x 22.4  = 4.03dm³

6 0
3 years ago
Please HELP, ASAP! Homework due tomorrow and I need some help.
sweet-ann [11.9K]
Ions are atoms with a charge other than zero. In a neutral atom, the number of protons (positively charged particles) in the nucleus equals the number of electrons orbiting the nucleus.
Atoms can gain or lose electrons (not protons) resulting in a net charge other than zero. Atoms which lose electrons (usually metals) become positively charges, and atoms which gain electrons (usually nonmetals) become negatively charged.
3 0
3 years ago
What does the period number indicate on periodic table
anastassius [24]
It’s atomic mass is what the number means.
4 0
3 years ago
Read 2 more answers
Write an interesting good presentation of acid and base​
aleksley [76]
<h2>★<u>Acid</u></h2>

  • these are sour in taste
  • corrosive in nature
  • the turn blue litmus to red when litmus paper is dipped into it
  • we also eat acids like citric acid in our daily life
<h2>★<u>Base</u></h2>

  • bitter in taste
  • soapy to touch
  • turn red litmus to Blue
  • we use bases like milk of magnesia and antacid in our daily life

Hope it helps u

5 0
3 years ago
How many atoms are in 3 moles of nitrogen
olga nikolaevna [1]

Answer:1 mol of Mg(NO3)2 contains 6.022*10^23 molecules

3 mol Mg(NO3)2 contains 3*6.022*10^23 = 1.81*10^24 molecules

Each Mg(NO3)2 molecule contains 2 N atoms  

Number of N atoms = 2*1.81*10^24 = 3.62*10^24 N atoms.

8 0
3 years ago
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