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blsea [12.9K]
3 years ago
15

How would I write these out

Chemistry
1 answer:
olasank [31]3 years ago
7 0

Answer:

Please see the attached image. The one on the left is the first one and the one on the right is the second one.

Hope that helps.

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The energy stored in foods and fuels is?
elixir [45]
Chemical potential energy
5 0
3 years ago
Copper sulfate, when it is dissolved in water, has a blue color. When steel wool is mixed with a copper sulfate solution, the st
jenyasd209 [6]

Answer:

A. The color change from blue to green happens in nature.

Explanation:

The color change is an indicator of a chemical reaction that has occurred. Although color changes are not necessarily good diagnostic tool to measure if a chemical reaction has occurred or not.

  • In this reaction, color changes is quite an effective tool
  • Chemical changes usually involves the formation of a new product from the chemical reaction.
  • Also, the steps are not easily reversible.
  • For this reaction, color change is the most appropriate signal for a chemical change.
4 0
3 years ago
Calculate the molar concentration of HA (90.2 g/mol) in a solution that has a specific gravity of 1.24 and is 64% HNO3 (w/w).​
ser-zykov [4K]

Answer:

Explanation:

Hello,

In this case, considering the given specific gravity we are to compute the density of the 64% HNO3 solution:

\rho=1.24*1g/mL=1.24g/mL

In such a way, since the given solution of nitric acid is 64 % by mass, we've got:

\frac{64gHNO_3}{100g\ solution}

Thus, by using the previously computed density and the molar mass of HA (90.2 g/mol) we can compute the required molar concentration as follows:

M=\frac{(100g-64g)HA}{100g\ solution}*\frac{1.24g\ solution }{1mL \ solution}*\frac{1000mL\ solution}{1L\ solution}*\frac{1molHA}{90.2gHA}   \\\\M=4.95M

Regards.

8 0
3 years ago
Are F2 and Br2 polar
FromTheMoon [43]
Neither F2 nor Br2 are polar because they are nonpolar. It is a good rule of thumb to know that any diatomic molecules like F2 or Br2 are always going to be nonpolar. Another way to determine this is to use the acronym SNAP ( symmetrical=nonpolar, asymmetrical=polar). Since both F2 and Br2 are symmetrical molecules, they must be nonpolar.

I hope this helps. 
6 0
3 years ago
Aluminum chlorate<br> +<br> barium sulfate → aluminum sulfate + barium chlorate
Virty [35]

Balanced equation

2Al(ClO₃)₃ + 3BaSO₄⇒ Al₂(SO₄)₃ + 3Ba(ClO₃)₂

<h3>Further explanation</h3>

Given

Word equation

Required

Chemical equation

Solution

Chemical equations can be expressed in

  • word equation
  • skeleton equation
  • balanced equation

Aluminum chlorate = Al(ClO₃)₃

Barium sulfate = BaSO₄

Aluminum sulfate = Al₂(SO₄)₃

Barium chlorate = Ba(ClO₃)₂

  • Skeleton equation

Al(ClO₃)₃ + BaSO₄⇒ Al₂(SO₄)₃ + Ba(ClO₃)₂

  • Balanced equation

2Al(ClO₃)₃ + 3BaSO₄⇒ Al₂(SO₄)₃ + 3Ba(ClO₃)₂

6 0
3 years ago
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