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
Tom [10]
2 years ago
14

Fill in the blanks to complete the idea of the sentences. Write your answers on a separate sheet of paper.

Chemistry
1 answer:
tiny-mole [99]2 years ago
7 0

Explanation:

thank you thank you thank you for the points

You might be interested in
18. What is the percent by mass sugar of a solution made by dissolving 12.45 grams of sugar in 100 grams of water?
Fantom [35]

The percent by mass sugar of a solution : 11.07%

<h3>Further explanation</h3>

Given

mass of sugar = 12.45 g

mass of water = 100 g

Required

The percent by mass

Solution

Mass of solution :

\tt mass~sugar+mass~water=12.45+100=112.45~g

Percent mass of sugar :

\tt \%mass=\dfrac{mass~sugar}{mass~solution}\times 100\%\\\\\%mass=\dfrac{12.45}{112.45}\times 100\%=11.07\%

6 0
2 years ago
Which is a chemical property of hydrogen?
koban [17]

Answer:

<h2>C</h2>

Explanation:

<h3>It is a colorless</h3>

I hope you help by my answee

3 0
2 years ago
Read 2 more answers
Which element has the same number of valence electrons as calcium?
kipiarov [429]

Answer:

Barium has the same number of valence electrons as calcium

Explanation:

Valence electrons is the number of electrons of an atom on the outer shell.

Those valence electrons can participate in the formation of a chemical bond (if the outer shell is not closed); in a single covalent bond, both atoms in the bond contribute one valence electron in order to form a shared pair.

<u>Calcium</u> is an atom, part of group 2, called the alkaline earth metals. The alkaline earth metals have 2 valence electrons.

<u>Sulfur </u>is part of a group 16, called the chalcogens or oxygen family. Those atoms have 6 valence electrons. They can form a bound with atoms of group 2 such as calcium, but do not have the same number of valence electrons.

<u>Potassium</u> is part of group 1, called the alkali metals or lithium family. Those atoms have 1 valence electrons. That means  Potassium do not have the same number of valence electrons like calcium.

<u>Neon</u> is part of group 18, the noble gasses. Those are stable atoms, which means they have 8 valence electrons. They do not have the same number of valence electrons like Calcium.

<u>Barium</u> an atom, part of group 2, called the alkaline earth metals. The alkaline earth metals have 2 valence electrons. Calcium is also part of this group.

This means barium has the same number of valence electrons as Calcium.

8 0
3 years ago
How many grams of NaCl are needed to prepare 1.20 liters of a 2.00 M solution?
larisa86 [58]

Answer: D) 140g

Explanation: no. of moles of NaCl = molarity X volume in litres = 2 X 1.2 = 2.4, and molar mass or mass of 1 mole of NaCl = 58.44 g, so 2.4 moles NaCl = 140.256 g

3 0
2 years ago
Properties of water what makes water so special
sertanlavr [38]
•boiling and freezing point
•surface tension
•vapor pressure
• solid state
•liquid state
•gaseous state
7 0
3 years ago
Other questions:
  • Disccuss what happens to copper in photochromic lenses from a redox perspective.
    8·1 answer
  • Adding copper or magnesium to aluminum creates an alloy that is _____.
    10·1 answer
  • Calculate the mass (in kg) of water produced from the combustion of 1.0 gallon (3.8 L) of gasoline (C8H18). The density of gasol
    11·2 answers
  • Which of the following represents the most matter?
    5·1 answer
  • Which of the following statements about the formation of a solution is true?
    5·1 answer
  • In an experiment, onion plants of different ages were exposed to various amounts of caffeine to determine the effect of caffeine
    7·1 answer
  • Which two kinds of energy are associated with flames?
    12·1 answer
  • A compound is 79.94g carbon, 26.82g hydrogen, and 93.24g nitrogen. What is the empirical formula?
    15·1 answer
  • What volume (in L) of nitrogen will be produced from the reaction of 6.8 L of carbon monoxide? 2CO(g) + 2NO(g) N2(g) + 2CO2(g)​
    11·1 answer
  • What is the correct formula of a compound that has ten oxygen atoms and four phosporus atoms?
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!