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kap26 [50]
2 years ago
12

A sprinter set a high school record in track and field, running 200.0 m in 21.3 s. What is the average speed of the sprinter in

kilometers per hour?
Chemistry
1 answer:
Taya2010 [7]2 years ago
3 0

Answer:

33.8km/h

Explanation:

average speed=dostance traveled/time

200/21.3=9.39 m/s

1m/s=3.6km/h

33.8km/h

please give brainliest

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Please help me immediately I will mark you as brainiest.
IrinaVladis [17]
There's 18 atoms in ammonium phosphate
5 0
3 years ago
How do you calculate rate of reaction?
Reil [10]

Answer:

Rate of reaction=(change in concentration of reactant/product) ➗ time taken for them change

Explanation:

To calculate rate of reaction you divide the change in concentration of reactant/product by the time taken for them change

5 0
4 years ago
Consider again the reaction for photosynthesis: 6CO2 + 6H2O → C6H12O6 + 6O2. Select the correct mole ratio to complete the calcu
Dmitry_Shevchenko [17]

Explanation:

Photosynthesis is the process whereby green plants uses light energy to manufacture food using carbon dioxide and water to produce energy rich glucose and oxygen gas as a bye - product.

 The equation is given below:

             6CO₂ + 6H₂O → C₆H₁₂O₆ + 6O₂

In the reaction above, the number of moles are:

               6CO₂     +     6H₂O    →       C₆H₁₂O₆    +      6O₂

                   6                   6                         1                    6

The reaction shows that 6 moles of carbon dioxide combines with 6 moles of water to give one mole of glucose and 6 moles of oxygen gas;

We can say that:

  To produce 1 mole of glucose, we need 6 moles of carbon dioxide

                       1 mole of glucose, we need 6 moles of water

                        6 moles of oxygen gas we need 6 moles of carbon dioxide

                        6 moles of oxygen gas we need 6 moles of water molecules

learn more:

Photosynthesis brainly.com/question/2761166

#learnwithBrainly

6 0
3 years ago
Freshwater is distributed in both time and space
Neko [114]
Answer:

Unevenly

Explanation:

Fresh water is distributed unevenly in both time and space.
7 0
2 years ago
A reaction that releases energy is called endothermic .<br><br><br> True or False
AnnyKZ [126]

Answer: False

Explanation: Endothermic means it absorbs heat energy.

4 0
3 years ago
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