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
Eva8 [605]
3 years ago
12

Help can you match the answers to the definition PLZ Need this ASAP 30 points

Chemistry
1 answer:
Alchen [17]3 years ago
8 0

Answer:

1-C

2-D

3-B

4-A

Explanation:

I think it is this if it is not , sorry!

You might be interested in
What element is chemically combined with hydrogen
Fudgin [204]

Uh I think water is??

5 0
3 years ago
La formula quimica de la molecula de agua H20 , si H = 1 gramos y O = 16 gramos . Cual es su composicion porcentual ? 88,88 % de
vesna_86 [32]

Answer:

88,88 % de O y 11,11 % de H

Explanation:

La composición porcentual se define como la masa que hay de cada mol de átomo en 100g. Las moles de agua en 100g son:

<em>Masa molar agua:</em>

2H = 2*1g/mol = 2g/mol

1O = 1*16g/mol = 16g/mol

Masa molar = 2 + 16 = 18g/mol

100g H2O * (1mol / 18g) = 5.556 moles H2O.

Moles de hidrógeno:

5.556 moles H2O * (2mol H / 1mol H2O) = 11.11 moles H

Moles Oxígeno = Moles H2O = 5.556 moles

La masa de hidrógeno es:

11.11mol * (1g/mol) 11.11g H

La masa de oxígeno es:

5.556 mol * (16g / 1mol) = 88.89g O

Así, el porcentaje de O es 88.89% y el de H es 11.11%. La opción correcta es:

<h3>88,88 % de O y 11,11 % de H</h3>
7 0
3 years ago
What is the mass of 2.65 millimoles of sulfur?
Bas_tet [7]
Divide this problem in to two steps: 1. Convert millimoles to moles. 2. Convert moles to grams.

1.
2.65 mlmol x 1mol/1000mlmol=.00265mol

2.
.00265mol x 32.065g/1 mol=.0850g S

Let me know if you need more explanation on why I used the conversions that I did.
6 0
3 years ago
the atomic number tells you the number of _______ in one atom of an element. It also tells you the number of ______ in a neutral
uysha [10]

Answer:

Protons, electrons, same in that order is the answer.

Explanation:

this has to do with the periodic table information.

5 0
2 years ago
Which element most likely has the same number of valence electrons as silicon (Si)?
Hatshy [7]

Answer:

germanium (Ge)

Explanation:

both belong to the same group

5 0
3 years ago
Other questions:
  • In the Periodic Table, what is the relationship between two elements that are placed side-by-side in a row?
    15·1 answer
  • 23. How would you say: The players competed well. (1 point)
    14·1 answer
  • A rectangle solid of unknown density is 5 m long two meters high and 4 meters wide. The mass of this solid is 300 grams. Find th
    12·1 answer
  • Which two scenarios illustrate the relationship between pressure and volume as described by Boyle’s law?
    8·1 answer
  • What gas law states that pressure and temperature are directly proportional at
    9·2 answers
  • How can you experimentally determine the solubility of a solute in water at a certain temperature?
    6·1 answer
  • An element gains 3 electrons to become stable. What is the new ion's charge?
    14·1 answer
  • Describe the process of melting of ice in terms of particles present​
    8·2 answers
  • Draw the electron dot structure for the hydrogen carbonate ion hco3-. Carbon is the central atom, and hydrogen is attached to ox
    14·1 answer
  • Write the step by step process of digestion in ruminants using 4 square method.
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!