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IRISSAK [1]
3 years ago
14

How can a scientist ensure that his or her data are reliable? by making a single observation

Chemistry
2 answers:
Virty [35]3 years ago
5 0
Hi!

We make sure data is reliable by repeating it over and over and over and over and over again! 

Repetition and replication <span>are </span>key, as the most constant consistent results we get - the more reliable the data is!

Hopefully, this helps! =)
alekssr [168]3 years ago
3 0
Having accurate  Specific date can give scientist what they need for more reliabliltiy.
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What change in volume results if 60.0 mL of gas is cooled from 33.0 °C to 5.00°C?
Mariana [72]
The volume of the gas will be decreased. Answer lies on the understanding of kinetic energy of particles and how particles occupy certain amount of space.
<span>I forgot to add: the answer is 50.91 difference in temperature. </span><span><span>
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3 0
3 years ago
Morphine has the formula c17h19no3. it is a base and accepts one proton per molecule. it is isolated from opium. a 0.685 −g samp
kotykmax [81]
2 C₁₇H₁₉NO₃ + H₂SO₄ → Product
Moles of H₂SO₄ = M x V(liters) = 0.0116 x 8.91/1000 = 1.033 x 10⁻⁴ mole 
moles of morphine = 2 x moles of H₂SO₄ = 2.066 x 10⁻⁴
Mass of morphine = moles x molar mass of morphine = 2.066 x 10⁻⁴ x 285.34 
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percent morphine = \frac{mass of morphine}{mass of opium} x 100
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7 0
3 years ago
How many moles of ammonia are produced when 5.0 moles of hydrogen react with excess nitrogen? Use this balanced equation for the
wel
3 mol H₂ → 2 mol NH₃

5 mol H₂ → x mol NH₃

x=2*5.0/3=3.3

n(NH₃)=3.3 mol
7 0
3 years ago
the atomic number of an element x is 14 and its relative atomic mass is 28 write the electronic distribution in an atom of x​
AlekseyPX

Answer:

the electronic distribution in an atom of x is 14

3 0
2 years ago
Which of the following substances dissolves most readily in water?
FrozenT [24]
The answer to you’re question is C. NH3
8 0
2 years ago
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