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soldier1979 [14.2K]
3 years ago
14

Between reaction of magnesium powder and lead oxide which is oxidized in the reaction and which is oxidizing agent

Chemistry
1 answer:
GuDViN [60]3 years ago
7 0

Answer:

Mg is oxidized and Pb is the oxidizing agent

Explanation:

You might be interested in
Propanoic acid has a boiling point of 141 °C, propanamide has a boiling point of 213 °C, and propanal has a boiling point of 48
deff fn [24]

Explanation:

  • As it is given that boiling point of propanamide is very high. So, reason for this is that easy formation of hydrogen bonds which are strong enough that we have to provide large amount of heat to break it.

As in -NH_{2}, the hydrogen atoms which are present are positive in nature. Due to this they are able to form hydrogen bonds with the neighboring oxygen atom.

Hence, these bonds are so strong that high heat needs to given to break them.

  • A propanoic acid contain carboxylic group as the functional group. So, this group is also able to form hydrogen bonding as it forms a hydrogen bond between an acid group and hydroxyl group of neighboring molecule.

Hence, it will also require high heat to break the bond due to which there will be increase in boiling point.

  • In propanal, there is presence of aldehyde functional group and three carbon atoms chain which will not form strong bonding with the hydrogen atom of CHO. Due to this there will exist weak Vander waal's force that is not at all strong enough.

As a result, less energy will be needed to break the bonds in propanal. Hence, it has very low boiling point.

4 0
3 years ago
Be sure to answer all parts. Fluoride ion is poisonous in relatively low amounts: 0.2 g of F− per 70 kg of body weight can cause
Stells [14]

Answer:

200 liters of fluoridated drinking water would have to be consumed by as person to reach the toxic level.

Explanation:

Toxic level of fluoride ions = 0.2 g per 70 kg body weight

Concentration of fluoride ions in drinking water = 1 mg/ L = 0.001 g/L

1 mg = 0.001 g

Let the volume of drinking water consumed by person to reach the toxic level of fluoride concentration be V.

For 70 kg body weight 0.2 grams of fluoride ions will be toxic.

V\times 0.001 g/L=0.2 g

V=\frac{0.2 g}{0.001 g/L}=200 L

200 liters of fluoridated drinking water would have to be consumed by as person to reach the toxic level.

7 0
3 years ago
What is the value for the kinetic energyfor a n = 2 Bohr orbit electron in Joules?
Vladimir [108]

Answer:

<u>K.E. = 5.4362 × 10⁻¹⁹ J</u>

Explanation:

The expression for Bohr velocity is:

v=\frac{Ze^2}{2 \epsilon_0\times n\times h}

Applying values for hydrogen atom,  

Z = 1

Mass of the electron (m_e) is 9.1093×10⁻³¹ kg

Charge of electron (e) is 1.60217662 × 10⁻¹⁹ C

\epsilon_0 = 8.854×10⁻¹² C² N⁻¹ m⁻²

h is Plank's constant having value = 6.626×10⁻³⁴ m² kg / s

We get that:

v=\frac {2.185\times 10^6}{n}\ m/s

Given, n = 2

So,

v=\frac {2.185\times 10^6}{2}\ m/s

v=1.0925\times 10^6\ m/s

Kinetic energy is:

K.E.=\frac {1}{2}\times mv^2

So,

K.E.=\frac {1}{2}\times 9.1093\times 10^{-31}\times ({1.0925\times 10^6})^2

<u>K.E. = 5.4362 × 10⁻¹⁹ J</u>

3 0
3 years ago
1. One third of the elements are classified as
serious [3.7K]

Answer:

One third of the elements are classified as <u>Metals.</u>

<h3><u>PLEASE</u><u> MARK</u><u> ME</u><u> BRAINLIEST</u><u>.</u></h3>
4 0
3 years ago
Which pair of atoms has the highest electronegativity difference?
melamori03 [73]
O - H
_____________________________________________________
7 0
3 years ago
Read 2 more answers
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