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Angelina_Jolie [31]
3 years ago
10

11 points!!! what happened when glucose reacts with air? ​

Physics
1 answer:
ella [17]3 years ago
3 0
When glucose (C6H12O6) reacts with oxygen, carbon dioxide and water are produced. The reaction produces moles of carbon dioxide and moles of water.
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A radioactive sample has a count rate of 10,000 Bq. 24 days later the activity has fallen to 625 Bq. What is the half-life of th
joja [24]

Answer:

10000 Bq / 625 Pq = 16

Radioactivity has decreased by a factor of 16

2^4 = 16

So the sample has gone thru 4 half-lives

24 da / 4 = 6 da

6 da is the half-life

6 0
3 years ago
Why a dam is thicker at the bottom than it's top​
timurjin [86]

Answer: Due to water pressure.

Explanation:

As depth increases so does the pressure.

6 0
4 years ago
HOW DOES A GRAPH HELP YOU SEE ANOMALOUS DATA?
Ghella [55]

Answer:

Anomalies consist of one or more modifications, insertions or deletions. As was described in Section 3.1, there are only three types of changes that can be made to a graph. Therefore, anomalies that consist of structural changes to a graph must consist of one of these types. Assumption 4.

Explanation:

8 0
3 years ago
a 645 N person is wearing stiletto shoes. If she lifts her left leg, and rocks back onto the heel under her right leg, the press
fgiga [73]

Answer:

0.96cm

Explanation:

Given parameters:

Weight of person = 645N

Pressure of the heel = 9000000PA

Unknown

Diameter of the circular base = ?

Solution

Pressure is the force per unit area of a body.

  Pressure = \frac{Force}{Area}

To solve this problem, find the unknown area of the circle;

             Pressure x Area = Force

         Area     = \frac{Force}{Pressure}

           Area  = \frac{645}{9000000} = 7.17 x 10⁻⁵m²

Note: 1Pa = 1Nm⁻²

Now;

  Area of a circle = π r²

         r = \frac{d}{2}

    Area =  π x \frac{d^{2} }{4}

d is the diameter

                    d²  = 4 x Area  x (1/π)

                d² = 4 x 7.17 x 10⁻⁵ x  (1/3.14) = 9.13 x 10⁻⁵

              d = 0.0096m

To cm;

                100cm = 1m

   0.0096m; 0.0096 x 100=  0.96cm

7 0
3 years ago
The efficiency of a machine can be increased by
Gre4nikov [31]

Explanation:

the efficiency of a machine can be increased by reducing the friction

please mark the brainliest

6 0
3 years ago
Read 2 more answers
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