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777dan777 [17]
3 years ago
5

Express the following number in scientific notation. 0.53000 = _____

Chemistry
2 answers:
DaniilM [7]3 years ago
8 0
Well the zeros after the decimal dot and after any decimal whole number is not count so the correct answer can be the first one (I hope this can help you a little bit)
kakasveta [241]3 years ago
7 0
Yes, it would be the last one as the zeros that appear after a non zero number are significant.
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Enlista cuatro compuestos del carbono,naturales y sintéticos,de uso en la vida cotidiana.
Mice21 [21]
Below is the list of both Natural and Synthetic compounds containing Carbon.

Natural Compounds Containing Carbon:

          1) Food:
                       Carbohydrates, Proteins, Lipids, Fibers

          2) Clothing:
                        Silk, Wool, Cotton

          3) Transportation:
                                      Coal, Natural Gas, Petroleum

          4) Wood:
                        Building, Furniture

Synthetic Compounds Containing Carbon:

          1) Clothing:
                              Nylon, Polyester, 

          2) Transportation:
                                      Petrol, Diesel, Jet Fuels

          3) Building:
                           High Density Polyethylene, Polyvinyl Chloride

          4) Home Appliances:
                        Teflon in non-stick Pans, polyethylene terephthalate bottles


          
5 0
3 years ago
Read 2 more answers
Which has more thermal energy, 500g of ice or 500g of steam? explain your answer.
RUDIKE [14]
Steam because steam comes from water which the energy makes it into steam
7 0
3 years ago
Draw all four products obtained when 2-ethyl-3-methyl-1,3-cyclohexadiene is treated with HBr at room temperature and show the me
LenKa [72]

Answer:

See explanation below

Explanation:

In this case we have reaction of addition. In this case a diene reacting with an acid as HBr. This reaction is known as Hydrohalogenation, and, as we have a diene, this kind of reaction can be done as 1,4 addition. Which means that the reaction will be undergoing with an adition in the carbon 1, and carbon 4.

At room temperature we can expect that this reaction can be done in thermodynamic conditions, Now, as the problem states that is forming 4 products, we can expect products of a 1,2 addition too. This product can be formed if the reaction is taking place in the most stable carbocation, and then, by resonance, we can expect the 1,4 product too.

Now, the HBr can be attacked by the double bond of the first position, giving two possible products or by the double bond of the third position giving the other two products. These products are all possible, obviously the most stable will be the major of all of them, but the other three are perfectly possible. One product is formed without doing much, and the other by resonance. Same happens with the other double bond.

In the picture below, you have the mechanism for all the 4 products.

Hope this helps

5 0
3 years ago
How many moles of water are produced from 15 moles of oxygen?
Grace [21]

Answer:

30 moles

Explanation:

Water is H2O, meaning there is 2 Hydrogen atoms and 1 Oxygen atom. Oxygen is O2, because it is a diatomic molecule. (Hydrogen is also a diatomic molecule, so H2)

The equation, balanced, would have to be: 2H2 + O2 -----> 2H2O

I multiply 15 moles O2 by the molar ratio of (hydrogen/oxygen)

15 mol. O2 *  (2 mol. H2/1 mol O2) = 30 moles of water

8 0
3 years ago
Hydrofluoric acid is used to etch grooves in glass because it reacts with the silica (sio2(s)) in glass. the products of the rea
kvv77 [185]
Answer is: coefficient is one.
Chemical reaction: SiO₂ + 4HF → SiF₄ + 2H₂O.
Reaction is balanced when there are equal numbers of elements in both side of the chemical reaction.
HF - hydrofluoric acid, <span>highly corrosive, dissolves many materials.</span>
SiF₄ - silicon tetrafluoride.
6 0
3 years ago
Read 2 more answers
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