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musickatia [10]
3 years ago
7

Kole travels from Joshua to Dallas and back a total of 100 miles in two hours what is the average speed of the car?

Chemistry
2 answers:
Flura [38]3 years ago
4 0

Answer:

50 miles per hour

Explanation:

To find the average speed per hour you have to find the unit rate so 100/2  which is 50. So 50 miles per hour.

adell [148]3 years ago
3 0

Answer: 50 mph

Explanation:

100 divided by 2 hours

Because if you think about it speed is miles per hours

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American cars use about 600,000,000 gallons of oil per year. How many liters of oil do American cars use per year? Report your a
kakasveta [241]

Answer:

2400000000

Explanation:

i believe that this should be the correct answer i punched in the numbers of conversion based off of what you put in your question.

4 0
3 years ago
if you started with 2.34 grams of methane and 8.32 grams of oxeygyn and the combustion reaction went to completion how many gram
Romashka-Z-Leto [24]

Answer:

Mass of CO₂ produced  = 5.72 g

Explanation:

Given data:

Mass of methane = 2.34 g

Mass of oxygen = 8.32 g

Mass of CO₂ produced = ?

Solution:

Chemical equation:

CH₄ + 2O₂    →      CO₂ + 2H₂O

Number of moles of methane:

Number of moles = mass/molar mass

Number of moles =  2.34 g/ 16 g/mol

Number of moles = 0.146 mol

Number of moles of oxygen:

Number of moles = mass/molar mass

Number of moles =  8.32 g/ 32 g/mol

Number of moles = 0.26 mol

Now we will compare the moles of carbon dioxide with oxygen and methane.

                         CH₄             :              CO₂

                           1                 :              1

                        0.146            :           0.146

                         O₂                :               CO₂

                          2                 :                   1

                     0.26                :              1/2×0.26 = 0.13 mol

Less number of moles of CO₂ are produced by oxygen thus oxygen will react as limiting reactant.

Mass of CO₂:

Mass = number of moles × molar mass

Mass = 0.13 mol ×  44 g/mol

Mass = 5.72 g

4 0
3 years ago
The part of the atom that carries a positive charge is the _____, and the part that carries a neutral charge is the _____.
daser333 [38]
Proton; neutron
Protons have a positive charge
Neutrons are neutral
Electrons have a negative charge :)
6 0
3 years ago
Read 2 more answers
A chemist has 2. 0 mol of methanol (CH3OH). The molar mass of methanol is 32. 0 g/mol. What is the mass, in grams, of the sample
natima [27]

The mass, in grams, of the sample of methanol (CH₃OH) is 64 grams.

<h3>How we calculate mass from moles?</h3>

Mass of any substance can be calculated by using moles as:

n = W/M, where

W = required mass

M = molar mass

In the question that:

Moles of methanol = 2mole

Molar mass of methanol = 32g/mole

On putting these values in the above equation, we get

W = n × M

W = 2mole × 32g/mole = 64g

Hence, 64 grams is the mass of the sample.

To know more about moles, visit the below link:

brainly.com/question/15374113

6 0
3 years ago
What's the balanced chemical equation for sodium azide + water?
DaniilM [7]
2NaN3 + H2O —> 2HN3 + Na2O
8 0
3 years ago
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