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vovikov84 [41]
3 years ago
6

If Maria winks exactly 5 times every minute and she sleeps

Chemistry
2 answers:
Marianna [84]3 years ago
6 0

Answer:

4800 times does Maria wink every  day.

Explanation:

Number of time Maria winks= 5 times in minute = 5 winks/min

Number of hours she sleeps in day = 8 hours

1 day = 24 hours

Number of hours when Maria is not sleeping = 24 hour - 8 hour = 16 hours

1 hour = 60 minutes

16 hours = 16 × 60 min = 960 min

number of winks in 960  minutes:

960 min\times 5 winks/min=4800 winks

4800 times does Maria wink every  day.

Elina [12.6K]3 years ago
4 0

First, we need to find the amount of winks in an hour, to simplify it so we can answer easier. Since there are 60 minutes in an hour, we can multiply 5 by 60 to find the number of winks in an hour.

5*60=300

Now multiply 300 by 8.

300*8=2,400

She winks exactly 2,400 times per day.

Hope this helps!

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On many common appliances, there is an “O” or “I” on the power switch. What does each symbol mean?
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How many moles of carbon dioxide are produced from 8.73 moles of tristearin?​
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Answer:

Explanation:

  8.73 mol                                         x mol

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How many moles of oxygen must be placed
umka21 [38]

Answer: 0.245 moles of oxygen must be placed in the container to exert the given pressure at the given temperature. The Ideal Gas Law equation gives the relationship among the pressure, volume, temperature, and moles of gas.

Further Explanation:

The Ideal Gas Equation is:  

PV = nRT  

where:  

P - pressure (in atm)  

V - volume (in L)  

n - amount of gas (in moles)  

R - universal gas constant 0.08206 \frac{L-atm}{mol-K}  

T - temperature (in K)  

In the problem, we are given the values:  

P = 2.00 atm (3 significant figures)

V = 3.00 L  (3 significant figures)

n = ?

T = 25.0 degrees Celsius (3 significant figures)  

We need to convert the temperature to Kelvin before we can use the Ideal Gas Equation. The formula to convert from degree Celsius to Kelvin is:  

Temperature \ in \ Kelvin = Temperature\ in \ Celsius \ + \ 273.15  

Therefore, for this problem,  

Temperature\ in \ K = 25.0 +273.15\\Temperature\ in \ K = 298.15  

Solving for n using the Ideal Gas Equation:  

n \ = \frac{PV}{RT}\\n \ = \frac{(2.00 \ atm) \ (3.00 \ L)}{(0.08206 \ \frac{L-atm}{mol-K})( 298.15 \ K)}  \\n \ = 0.245 \ mol

The least number of significant figures is 3, therefore, the final answer must have only 3 significant figures.

Learn More  

1. Learn more about Boyle's Law brainly.com/question/1437490  

2. Learn more about Charles' Law brainly.com/question/1421697  

3. Learn more about Gay-Lussac's Law brainly.com/question/6534668

Keywords: Ideal Gas Law, Volume, Pressure

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