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
gladu [14]
3 years ago
11

Which is NOT a control in the following experiment?: An experiment was performed to determine how the amount of coffee grounds c

ould affect the taste of coffee. The same kind of coffee, the same coffee maker, the same amount and type of water, and the same electrical sources were used. While experimenting, the scientists notes that the more coffee grounds there were, the longer it took to brew.
Chemistry
1 answer:
Alexandra [31]3 years ago
7 0

Answer:

The same kind of coffee, the same coffee maker, the same amount and type of water, and the same electrical sources were used.

Explanation:

You might be interested in
We can consider a chemical to be safe if:
slamgirl [31]
We can consider a chemical to be safe if it does not contain any harmful substances such as nitrogen, harmful acids, or even excessive heat. Other chemicals such as the chemicals used in food products like, for example, citric acid, is not so harmful.
Hope this helps! :D
Any questions? Just let me know! I'd be happy to help any way possible.
8 0
2 years ago
Why did we change our understanding of where life comes from?
Andru [333]

Answer:

whathappensinthisstory

8 0
2 years ago
The electron configuration of an element is 1s22s22p4.
MissTica

The likely thing which happens when two atoms of this element move toward each other is covalent bonding.

<h3>What is Covalent bonding?</h3>

This involves the atoms of element sharing electrons in order to achieve a stable octet configuration.

The element is oxygen which has an atomic number of 8 and needs two electrons to complete its outermost shell which results in the formation of two covalent bonds.

Read more about Covalent bonding here brainly.com/question/3447218

#SPJ1

3 0
1 year ago
4HCl(g)+O2(g)⟶2Cl2(g)+2H2O(g) Calculate the number of grams of Cl2 formed when 0.385 mol HCl reacts with an excess of O2. mass:
FromTheMoon [43]

The number of grams of Cl2 formed when 0.385 mol HCl reacts with an excess of O2 is 13.6675 g.

<h3>What are moles?</h3>

A mole is defined as 6.02214076 × 10^{23} of some chemical unit, be it atoms, molecules, ions, or others. The mole is a convenient unit to use because of the great number of atoms, molecules, or others in any substance.

Given data:

Moles of hydrochloric acid = 0.385 mol

Mass of chlorine gas =?

Chemical equation:

4HCl +  O₂ → 2Cl₂  + 2H₂O

Now we will compare the moles of Cl₂ with HCl.

                 HCl           :               Cl₂

                   4             :               2

                0.385       :              2÷4× 0.385 = 0.1925 mol

Oxygen is present in excess that's why the mass of chlorine produced depends upon the available amount of HCl.

Mass of Cl₂ :

Mass of Cl₂ = moles × molar mass

Mass of Cl₂ =0.1925 mol × 71 g/mol

Mass of Cl₂ =  13.6675 g

Hence, the number of grams of Cl2 formed when 0.385 mol HCl reacts with an excess of O2 is 13.6675 g.

Learn more about moles here:

brainly.com/question/8455949

#SPJ1

6 0
2 years ago
Which substances in the diagram are most unstable? positive values of enthalpy negative values of enthalpy negative values -50 t
NemiM [27]

Answer:

no  s e

Explanation:

tampocose

8 0
3 years ago
Read 2 more answers
Other questions:
  • Help please I don’t know the answer
    14·2 answers
  • In a molecule of calcium sulfide, calcium has two valence electron bonds, and a sulfur atom has six valence electrons. How many
    5·2 answers
  • Iron has a density of 7.874 g/cm3 what is the mass of a rectangular block of iron with dimensions of 3.000 cm by 4.000cm by 5000
    8·1 answer
  • How many moles of water are in 24.3 grams of water?
    12·2 answers
  • Give an example of instantaneous speed
    10·2 answers
  • What r the uses of bases...!??<br>(follow me plz) ​
    6·1 answer
  • Ammonia gas can be prepared by the following reaction:CaO(s) + 2NH4Cl(s) ------&gt; 2NH3(g) + H2O(g) + CaCl2(s)In an experiment,
    5·1 answer
  • How many significant digits in 0.23100
    15·1 answer
  • Use what you have learned about the types of energy that travel from the Sun to Earth to match each term with its description.
    14·2 answers
  • Drugs that can be determined by acid base titration
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!