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fiasKO [112]
3 years ago
6

I NEED HELP :)

Chemistry
2 answers:
BlackZzzverrR [31]3 years ago
8 0

Answer:

48 mph

Explanation:

total time= 19/12 hr

distence- 76 miles

speed- D/T=76/19/12

which is 48mph

if my answer helps please mark as brainliest.

trapecia [35]3 years ago
6 0

Answer:

pretty sure its average speed in miles per hour is 48

Explanation:

I just took 76 and divided it by 1 7/12 and got 48

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In the combustion of ethane, shown above, how many moles of carbon dioxide can be produced from 1.00 mole of ethane? A. 0.500 mo
Daniel [21]
The balanced chemical equation for the <span>combustion of ethane is 
2C</span>₂H₆(g) + 7O₂(g) → 4CO₂(g) + 6H₂O(l)

The stoichiometric ratio between C₂H₆(g) and CO₂(g)  is 1 : 2

Hence,
    moles of 
CO₂(g) produced = moles of reacted C₂H₆(g) x 2
                                                 
= 1.00 mol x 2
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Hence, the correct answer is "C".
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3 years ago
Manganese (Mn) has many possible oxidation numbers (+2 and +4 are just two of these). Write the correct formulas and names for t
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Answer:

Oxide of manganese, Potassium permanganate, Manganese bromide and manganese oxide.

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2. Potassium permanganate

Its chemical formula is $KMnO_4$. It is commonly used in the laboratories as oxidizing agent. They appear black in color.

3 Manganese bromide

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The most stable state of Manganese is +2 oxidation state.

5 0
3 years ago
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laila [671]

Answer:

The answer in this question is show you made Sodium Hydroxide and Hydrogen Gas.In order to do the products of the reaction relate to the phenol red test and the splint test you need to show that you made Sodium Hydroxide and Hydrogen Gas. Show that you made Sodium Hydroxide and Hydrogen Gas so that the products of the reaction relate to the phenol red test and the splint test.

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Fiesta28 [93]

Answer:

Measurements are so often taken for granted we sometimes do not appreciate the grand importance measurements play in our lives. On a baseline level, measurements fall into the categories of weight, area, volume, length and even temperature. While we look at these various categories as stoic forms of mathematical measurements a closer examination of things we do in everyday life reveals their clear importance.

Explanation:

Measurements provide structure and remove the chaos that would result without any congruent method of understanding weight, mass, temperature, etc.

4 0
3 years ago
Read 2 more answers
Just need the bottom two rows completed. Will give brainliest.
rodikova [14]

Explanation:

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