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
yanalaym [24]
3 years ago
9

Making observations is the first step in the scientific method. Why don't scientists stop with the first step when creating an e

xperiment?
A. Scientists don't stop with the first step of their experiment because they don't think that just using their observations is a very good place to start to prove their hypothesis.
B. Scientists don't stop with the first step of their experiment because they not only want to observe but they want to test their observations to be sure they are correct.
C. Scientists don't stop with the first step of their experiment because they want other scientists' opinions because they may not trust their own observations.
D. Scientists don't stop with the first step of their experiment because they would rather plan and run experiments than just observe the world around them.
Chemistry
1 answer:
ankoles [38]3 years ago
6 0
B should be the answer!
You might be interested in
A compound x is an important ingredient of an antacid. It is also used in fine extinguishers. Identify x.
Maslowich
NaHCO3 is the required substance often used in antacid and is used in Soda Acid Fire Extinguisher.
3 0
3 years ago
Read 2 more answers
Urea (CH4N2O) is a common fertilizer that can be synthesized by the reaction of ammonia (NH3) with carbon dioxide as follows:
Nezavi [6.7K]

The theoretical yield of urea : = 227.4 kg

<h3>Further explanation</h3>

Given

Reaction

2NH3(aq)+CO2(aq)→CH4N2O(aq)+H2O(l)

128.9 kg of ammonia

211.4 kg of carbon dioxide

166.3 kg of urea.

Required

The theoretical yield of urea

Solution

mol Ammonia (MW=17 g/mol)

=128.9 : 17

= 7.58 kmol

mol CO₂(MW=44 g/mol) :

= 211.4 : 44

= 4.805 kmol

Mol : coefficient of reactant , NH₃ : CO₂ :

= 7.58/2 : 4.805/1

=3.79 : 4.805

Ammonia as limiting reactant(smaller ratio)

Mol urea based on mol Ammonia :

=1/2 x 7.58

=3.79 kmol

Mass urea :

=3.79 kmol x 60 g/mol

= 227.4 kg

3 0
2 years ago
Which type of erosion most likely formed the Grand Canyon?
butalik [34]
Flowing water of course
4 0
3 years ago
A neutral atom in the ground state of Sulfur has its outer most valence electron in which orbital? f d
Natasha_Volkova [10]

<u>Answer:</u> The outermost valence electron enters the p orbital.

<u>Explanation:</u>

Valence electrons are defined as the electrons which are present in outer most orbital of an atom.

Sulfur is the 16th element of the periodic table having 16 electrons.

Electronic configuration of sulfur atom is 1s^22s^22p^63s^23p^4

The number of valence electrons are 2 + 4 = 6

These 6 electrons enter s-orbital and p-orbital but the outermost valence electron will enter the p-orbital.

Hence, the outermost valence electron enters p orbital.

3 0
3 years ago
The Ksp of yttrium iodate, Y(IO3)3 , is 1.12×10−10 . Calculate the molar solubility, s , of this compound.
torisob [31]

Answer:

1.427x10^-3mol per L

Explanation:

Y(IO_{3} )_{3} ---- Y^{3+} +IO_{3} ^{3-}

I could use ⇌ in the math editor so I used ----

from the question each mole of Y(IO3)3 is dissolved  and this is giving us a mole of Y3+ and a mole of IO3^3-

Ksp = [Y^3+][IO3-]^3

So that,

1.12x10^-10 = [S][3S]^3

such that

1.12x10^-10 = 27S^4

the value of s is 0.001427mol per L

= 1.427x10^-3mol per L

so in conclusion

the molar solubility is therefore 1.427x10^-3mol per L

3 0
3 years ago
Other questions:
  • What are the industrial conditions used in the Haber process and why?
    12·1 answer
  • Which of the following statements about metal elements is correct?
    5·1 answer
  • PLZZ HELP ME ASAP
    9·2 answers
  • A __________ reaction occurs when a substance, usually containing carbon, reacts with oxygen to produce energy in the form of he
    9·1 answer
  • Match the element with its number of valence electrons. Match Term Definition: Helium Aluminum Fluorine Sodium A) 1 B) 2 C) 3 D)
    9·2 answers
  • Boron fluoride obeys the octet rule.<br><br> True or false
    13·2 answers
  • Can someone help me ASAP THIS IS IS A IMPORTANT GRADE
    10·2 answers
  • Which of these changes would likely occur if the Earth's rotation on its axis
    14·1 answer
  • For a constant force, when the surface area is tripled the
    10·1 answer
  • He density of water is 1 g/mL.
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!