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
jek_recluse [69]
1 year ago
13

Question 1:

Chemistry
1 answer:
nadya68 [22]1 year ago
4 0

Explanation:

mole=mass/molar mass

molar mass of c12H17N4OS

12×12+17+14×4+16+32

=265

molar mass=265

mole=0.02/265

You might be interested in
Which of the following are excited in ultraviolet photoelectron spectroscopy?
zavuch27 [327]

Answer:

D. Valance Electrons

Explanation:

6 0
3 years ago
A box of paper clips weighs 1.1 kg. If each paper clip weighs 0.88 grams, how many paper clips are in the box? (Hint: 1 kg = 100
PolarNik [594]
1.1kg = 1100g
If each paper clip is 0.88g : 1100 / 0.88 = 1250
1250 paper clips in the box
5 0
3 years ago
Read 2 more answers
Moritz is watching his little brother play in a mud puddle. Moritz notices that when his brother stirs it with a stick, after a
PIT_PIT [208]

<em>Moritz is watching his little brother play in a mud puddle. Moritz notices that when his brother stirs it with a stick, after a few moments the dirt settles back to the bottom of the puddle. His brother is creating a; </em>SUSPENSION  

<em>Anjali knows that whole milk has more fat than skim milk. However, the solid fat doesn’t seem to separate from the liquid milk even after it has been in the fridge for a few days. This is evidence that milk is a;</em>  COLLOID

8 0
3 years ago
Read 2 more answers
Make the equation equal<br> Fe(NO3)3+KSCN —&gt; Fe(SCN)3 + K(NO3)3
Advocard [28]

Answer:

Fe(NO₃)₃ + 3KSCN  →   Fe(SCN)₃ + 3KNO₃

Explanation:

Chemical equation:

Fe(NO₃)₃ + KSCN  →   Fe(SCN)₃ + KNO₃

Balanced Chemical equation:

Fe(NO₃)₃ + 3KSCN  →   Fe(SCN)₃ + 3KNO₃

Type of reaction:

It is double displacement reaction.

In this reaction the anion or cation of both reactants exchange with each other. In given reaction the cation Fe⁺³ exchange with cation K⁺.

The given reaction equation is balanced so there are equal number of atoms of each elements are present on both side of equation and completely hold the law of conservation of mass.

Double replacement:

It is the reaction in which two compound exchange their ions and form new compounds.

AB + CD → AC +BD

5 0
3 years ago
calculate atomic weight of silver which has two isotopes with the following properties : silver-107 (106.91 amu, 51.84% natural
Julli [10]

Answer: The atomic weight of silver is 107.87 amu

Explanation:

Mass of isotope silver-107  = 106.91 amu

% abundance of isotope silver -107 = 51.84% = \frac{51.84}{100}=0.5184

Mass of isotope silver-109 = 108.90 amu

% abundance of isotope silver-109  = 48.16% = \frac{48.16}{100}=0.4816

Formula used for average atomic mass of an element :

\text{ Average atomic mass of an element}=\sum(\text{atomic mass of an isotopes}\times {{\text { fractional abundance}})

A=\sum[(106.91\times 0.5184)+(108.90\times 0.4816)]

A=107.87amu

Thus atomic weight of silver is 107.87 amu

8 0
3 years ago
Other questions:
  • A solution is made by dissolving
    12·1 answer
  • What is The Domain with four kingdoms or organisms that have cells with nuclei?
    10·1 answer
  • PLEASE for the love of god answer these questions for me!!!! It’s urgent.
    8·2 answers
  • Graphite from a pencil and a diamond ring are made of the same material. Explain how this is possible. Include a detailed descri
    15·1 answer
  • What is the formula of nitrous acid?
    13·2 answers
  • Hey i am new here
    14·1 answer
  • What is the molarity of a nitric acid solution if 43.13 mL 0.1000 M KOH solution is needed to neutralize 30.00 mL of the acid so
    11·1 answer
  • How is the size of silver nanoparticles different from normal sized silver?
    9·1 answer
  • NEED HELP DESPERATELY!!!
    14·2 answers
  • Is Elisa getting the right amount of sleep??
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!