CHEMISTRY HIGH SCHOOL

If 6 grams of a hydrocarbon gas have a volume of4.8 cubic decimeter, what would be the
approximate molecular mass of this gas?
A 30 grams
B 40 grams
C 20 grams
D 48 grams

Answers

Answer 1
Answer:

Answer:

30 grams

Explanation:

I got 40 wrong so I picked 30
Answer 2
Answer:

Answer:

30 grams

Explanation:

I did the ck12

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Bromine, a liquid at room temperature, has a boiling point of 58°C and a melting point of –7.2°C. Bromine can be classified as acompound. impure substance. mixture. pure substance.

Which of the following elements would be considered a nonmetal?fluorine (#9)
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The element among the list that is not a metal there is the element fluorine.

What is a nonmetal?

A nonmetal is an element that occur towards the right hand side of the periodic table and does not have the general properties that are attributed to metals such as the ability to react with acids.

The element among the list that is not a metal there is the element fluorine.

Learn more about metals: brainly.com/question/2273750

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fluorine (#9) is a nonmetal

What types of elements tend to combine to form molecular compounds?

Answers

Non-metals tend to combine to form molecular compounds.

What is a Covalent compound?

  • Covalent compounds are made up of two or more nonmetallic elements, such as carbon and hydrogen. Covalent bonds hold the atoms of the various elements together in molecules to form a covalent compound.
  • Atoms share valence electrons in these chemical bonds. The atoms in the molecule are held together by the attraction between the shared electrons and the positive nuclei of both atoms.
  • The smallest component of a covalent compound that retains the properties of the complex is called a molecule. Thousands of atoms make up the biggest, most intricate covalent compounds.
  • Examples include the substances found in living things such as proteins and carbohydrates. Covalent compounds having only two atoms in their molecules are the smallest and most basic.
  • Many covalent compounds are easily burned, notably those that contain carbon and hydrogen. Many ionic substances, in contrast, do not burn.
  • In contrast to most ionic compounds, many covalent compounds do not dissolve in water. Covalent compounds cannot conduct electricity because they lack freely moving electrons, unlike ionic compounds.
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Most molecular compounds are composed of the atoms of two or more nonmetals, ionic compounds on the other hand, are formed from a metal and a non metal. All of them, with the exception of the "Noble" gases (group 8 in the periodic table). Even these have been forced to form compounds under unique laboratory conditions, with the exception of Helium. No stable compound of Helium is known

Each molecule of table sugar, C12H22O11, containsa.
0 atoms of carbon.
c.
6 atoms of carbon.
b.
1 atom of carbon.
d.
12 atoms of carbon.

Answers

Answer : The correct option is, (d) 12 atoms of carbon.

Explanation:

The formula of given molecule of table sugar is, C_(12)H_(22)O_(11)

The given molecule is made up of three elements which are, carbon, hydrogen and oxygen.

In the given molecule of table sugar C_(12)H_(22)O_(11), there are 12 number of carbon atoms, 22 number of hydrogen atoms and 11 number of oxygen atoms.

From the given options we conclude that, the option (d) is the correct option. While the other options are incorrect.

Hence, the correct option is, (d) 12 atoms of carbon.
d, because C12 means there's 12 atoms of carbon. 

How many molecules are in 10 moles of Hydrogen?

Answers

Answer:3.2

Mass:32

Molecular weight: 10

Moles: 3.2

What is an ionice equation with phases for the following chemical reaction: 2HBr(aq)+BaOH2(aq)-->2H2O(l)BaBr2(aq)?

Answers

Molecular reaction 

2HBr(aq) Ba(OH)2 (aq) = 2H2O (l) BaBr2(aq) 


Ionic equation 

2H 2Br- Ba 2 2OH- --------> Ba 2 2Br - 2H2O 

Net ionic equation 

2H (aq) 2OH- (aq)- ---------> 2H2O (l)

What is the affect of increasing the water's mass?how does it reflect it's temperature?

Answers

I assume what you're asking about is, how does the temperature changes when we increase water's mass, according the formula for heat ? 
Well the formula is : Q=m\cdot c\cdot \Delta t (where Q is heat, m is mass, c is specific heat and \Delta t is change in temperature. So according this formula, increasing mass will increase the substance's heat, but won't effect it's temperature since they are not related. Unless,  if you want to keep the substance's heat constant, in that case when you increase it's mass you will have to decrease the temperature
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