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postnew [5]
4 years ago
13

Succinic acid, a white solid that melts at 182°C, is heated gently, and a gas is given off. After the gas evolution stops, a whi

te solid remains that melts at a temperature different from 182°C. In terms of the number of atoms contained, how do you thing the size of succinic acid molecules compares with the size of the molecules of the white solid produced by this process?
Chemistry
1 answer:
Gennadij [26K]4 years ago
4 0

Answer:

Explanation:

In terms of the size, we can infer from the discussion that the succinic acid will now have a lower size after it has given off the gas. The lower size implies a decrease in the number of atoms that would be contained in the acid. The gas given off has a particular number of atoms it will carry off during its emission.

We can conclude that succinic acid will have more atoms and a larger size compared to the white solid that results from the heating process.

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Given the unbalanced equation: PbCl₂ + Na₂CrO₂ ---> PbCrO₂ + NaCl. When properly balanced, the sum of the balancing coefficie
Veronika [31]

Answer:

A. 2

hope this helps :)

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3 0
3 years ago
If you had excess chlorine, how many moles of of aluminum chloride could be produced from 25.0 g of aluminum? Express your answe
m_a_m_a [10]

Answer:

A. From 25,0 g of aluminium you will produce 0,927 moles of aluminium chloride

B. From 30,0 g of chlorine gas you will produce: 0,282 moles of aluminium chloride

Explanation:

a. The reaction that you have in this problem is:

3 Cl₂ + 2 Al → 2 AlCl₃

25,0 g of aluminium are:

25,0 ₓ\frac{1mole}{26,98g} = 0,927 moles

As Al:AlCl₃ ratio is 1, from 25,0 g of aluminium you will produce: <em>0,927 moles of aluminium chloride</em>

b. 30,0 g of chlorine gas are:

30,0 ₓ\frac{1mole}{70,90g} = 0,423 moles of Cl₂

As Cl₂:AlCl₃ ratio is ³/₂:

0,423 moles of Cl₂ ₓ \frac{2 molesAlCl_3}{3 molesCl_2} = <em>0,282 moles of aluminium chloride</em>

Thus, from 30,0 g of chlorine gas you will produce: <em>0,282 moles of aluminium chloride</em>

<em></em>

I hope it helps!

5 0
4 years ago
An element is a main constituent of paper, diamond and clothes etc. It forms covalent bonds with itself and other elements:- (1)
zvonat [6]
The element that is the main constituent of paper, diamond, and clothes, among others is CARBON. It forms covalent bonds with itself and other elements. It is one of the most abundant and accessible elements on Earth. All organic compounds consist of at least one Carbon atom. 
7 0
3 years ago
The number placed in front of a compound to balance a chemical reaction is called
masha68 [24]

Answer: <em>The number placed in front of a compound to balance a chemical reaction is called </em><em><u>coefficient</u></em>.

Explanation:

Assume this general form for a <em>chemical equation</em>:

  • <em>a</em>A + <em>b</em>B → <em>c</em>C + <em>d</em>D

The letters <em>a, b, c, </em>and <em>d,</em> in front of each compound A, B, C, and D, are called coefficients and indicate the number of formula units (molecules or ions) that take part in the equation.

Those coefficients are needed to <em>balance the equation</em> and ensure compliance with the law of mass conservation.

This example shows it:

  • Word equation: hydrogen + oxygen yields water

  • Chemical equation: H₂ (g) + O₂(g) → H₂O(g)

  • Balance, adding the coefficients so that the number of each kind of atoms is the same on the left and the right of the chemical equation:

        H₂ (g) + 2O₂(g) → 2H₂O(g)

In that equation:

  • The coefficient of H₂ (g) on the left is 1 (it is not written)
  • The coefficient of O₂(g) on the left is 2
  • The coefficient of H₂O(g) on the right is 2

You read it as: 1 mole of gaseous hydrogen and 2 moles of gaseous oxygen yield 2 moles of water vapor.

4 0
3 years ago
Large molecules are formed by what process?
inn [45]
Atoum is the process of how large molecules are formed
7 0
3 years ago
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