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3 years ago

Which best depicts wind erosion?

Chemistry

2 answers:

Harrizon [31]3 years ago

7 0

Which best depicts wind erosion?
B.
rolling marble

Oduvanchick [21]3 years ago

4 0

Answer:

the answer is rubbing sandpaper

Explanation:

ik this bc i just took the test

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Indicate whether the following balanced equations involve oxidation-reduction. Check all that apply. Check all that apply. 2H2SO

guapka [62]

Answer : The balanced equations involve oxidation-reduction are:

(a) $2H_2SO_4(aq)+2NaBr(s)\rightarrow Br_2(l)+SO_2(g)+Na_2SO_4(aq)+2H_2O(l)$

(b) $3SO_2(g)+2HNO_3(aq)+2H_2O(l)\rightarrow 3H_2SO_4(aq)+2NO(g)$

(c) $NaI(aq)+3HOCl(aq)\rightarrow NaIO_3(aq)+3HCl(aq)$

Explanation :

Redox reaction or Oxidation-reduction reaction : It is defined as the reaction in which the oxidation and reduction reaction takes place simultaneously.

Oxidation reaction : It is defined as the reaction in which a substance looses its electrons. In this, oxidation state of an element increases. Or we can say that in oxidation, the loss of electrons takes place.

Reduction reaction : It is defined as the reaction in which a substance gains electrons. In this, oxidation state of an element decreases. Or we can say that in reduction, the gain of electrons takes place.

(a) The given chemical reaction is:

$2H_2SO_4(aq)+2NaBr(s)\rightarrow Br_2(l)+SO_2(g)+Na_2SO_4(aq)+2H_2O(l)$

This reaction involve oxidation-reduction reaction because the oxidation state bromine changes from (-1) to (0) which shows oxidation and sulfur changes from (+6) to (+4) which shows reduction.

(b) The given chemical reaction is:

$3SO_2(g)+2HNO_3(aq)+2H_2O(l)\rightarrow 3H_2SO_4(aq)+2NO(g)$

This reaction involve oxidation-reduction reaction because the oxidation state sulfur changes from (+4) to (+6) which shows oxidation and nitrogen changes from (+5) to (+2) which shows reduction.

(c) The given chemical reaction is:

$NaI(aq)+3HOCl(aq)\rightarrow NaIO_3(aq)+3HCl(aq)$

This reaction involve oxidation-reduction reaction because the oxidation state iodine changes from (-1) to (+5) which shows oxidation and chlorine changes from (+5) to (-1) which shows reduction.

(d) The given chemical reaction is:

$PBr_3(l)+3H_2O(l)\rightarrow H_3PO_3(aq)+3HBr(aq)$

This reaction does not involve oxidation-reduction reaction because the oxidation state of element present on reactant and product side are same.

3 0

3 years ago

What is a force that holds atoms together. Answers include

Keith_Richards [23]

Answer:

the answer is electron shell

I hope it helps you

7 0

3 years ago

Read 2 more answers

How many electrons are in the 4p orbital does Br possesses?

Klio2033 [76]

Answer:

5 electron

It contains 6 electrons in 2p orbital, 6 electrons in 3p orbital and 5 electron in 4p orbital.

5 0

4 years ago

Write each mixed number as as a decimal. Use bar notation if the decimal is repeating.

aniked [119]

Number 1 is 4.875 Number 2 is 3.47 repeating

6 0

3 years ago

Which atom(s) in the molecule CH3OCH3 will display tetrahedral electron-pair geometry? (Select all that apply)a. Ob. Cc. Hd. non

FrozenT [24]

Answer:

b. C

Explanation:

The geometry is how the bonds and the lone pairs of electrons are distributed around the atom, and the angles formed by them occurs to minimize the repulsive forces of the bonds and the lone pairs.

For example, the molecule of CO₂ is linear, because the central atom C has no lone pairs (the valence shell of it has 4 electrons, so it shares all of them to be stable), and do only two bonds. But the molecule of H₂O is angular, because the central atom O has two lone pairs (its valence shell has 6 electrons, so it only shares 2 electrons to be stable), and the repulsive forces are minimized with an angle of 104.45°.

To the geometry be tetrahedral, the atom must have 4 bonds, and none lone pairs, and it only happens at the two C in the molecule given. H only does one bond, and O does 2 bonds and has 2 lone pairs.

4 0

3 years ago