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frez [133]
3 years ago
6

PLEASE HELP fast (IMAGE)

Chemistry
1 answer:
n200080 [17]3 years ago
6 0

Answer:

A. 3

Explanation:

There is half as many moles of CO₂ as of O₂. Half of 6 is 3. The equation is:

6 molO2*\frac{1molCO2}{2molO2} = 3molCO2

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The length of a desk is 3.5 feet. how many centimeters is the length
Delvig [45]
1 foot = 30.48 cm
3.5 ft * 30.48 cm = 106.68 cm

Answer = 106.68 cm

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Please mark as brainliest
4 0
3 years ago
Read 2 more answers
The titration of Na2CO3 with HCl has the following qualitative profile: a. Identify the major species in solution at points A-F.
exis [7]

Answer:

Answer is explained in the explanation section below.

Explanation:

Solution:

Note: This question is incomplete and lacks very important data to solve this question. But I have found the similar question which shows the profiles about which question discusses. Using the data from that question, I have solved the question.

a) We need to find the major species from A to F.

Major Species at A:

1. Na_{2} CO_{3}

Major Species at B:

1. Na_{2} CO_{3}

2. NaHCO_{3}

Major Species at C:

1. NaHCO_{3}

Major Species at D:

1. NaHCO_{3}

2. H_{2}CO_{3}

Major Species at E:

1. H_{2}CO_{3}

Major Species at F:

1. H_{2}CO_{3}

b) pH calculation:

At Halfway point B:

pH = pKa_{1} + log[CO_{3}.^{-2}]/[HCO_{3}.^{-1}]

pH = pKa_{1} = 6.35

Similarly, at halfway point D.  

At point D,

pH = pKa_{2} + log [HCO_{3}.^{-1}]/[H2CO_{3}]

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8 0
3 years ago
Help please!!!!!!!!!!!!
pav-90 [236]

Answer:

0.004953

Explanation:

8 0
3 years ago
Some chemical reactions that are reversible (put some picture for better understanding)
GalinKa [24]

Ammonium chloride is a white solid that breaks down when heated and produces ammonia and hydrogen chloride.

<h3>What is the reversible reaction?</h3>

A reversible reaction is a reaction in which the conversion of reactants to products and products to reactants occur at the same time. In the above example, the chemical shows a reversible reaction because it moves both forward and backward direction. In reversible reaction, equal amount of reactant is converted into product and product into reactant.

So we can conclude that Ammonium chloride is a chemical that represents a reversible reaction.

Learn more about reaction here: brainly.com/question/11231920

#SPJ1

8 0
2 years ago
Newton's third law of motion is summarized as the law of action-reaction. For every action, there is an equal but opposite react
Fantom [35]

Answer:

When we stand on the floor, we apply a force on the floor surface in the downward direction and in return the floor also exerts an upward and equal force on us.

Explanation:

Newton' third law is vey famous and it states that for each and every action, there applies an equal but opposite reaction. Thus the action force and the reaction force always acts on pairs. But they does not contribute to the motion of the object.

One such example that illustrates the action and reaction force from Newton's law is when we stand on the floor we exert a force on the floor surface in downward direction. The floor surface also exerts an opposite and equal force on us in the upward direction.

7 0
3 years ago
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