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2 years ago

How do the tilt of earths axis and earths movements around the sun cause seasons ?

2 answers:

7 0

For example when the northern hemisphere is experiencing summer it is tilting toward the sun and the Southern Hemisphere is experiencing winter and is tilting away from the sun

Elanso [62]2 years ago

3 0

Alright so here is my best explanation. Imagine you are roasting a marshmallow. You turn it to toast the sides evenly, and the side away from the fire is cooler than the side facing it. The Earth is in a similar situation. The Earth is tilted so it rotates on an angle. When the northern hemisphere tilts towards the sun during rotation, the southern hemisphere faces away so therefore seasons occur.

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What negative effects can increase tropospheric ozone level hav on humans

anzhelika [568]

If the O-Zone Tropo increased to a point, like it has, it can cause a huge variety of health problems and even death! Some of the problems include, but are not limited to: Asthma, Emphysema, Chest Pain, Inflamed Lungs and Lung Scarring from tissue damage.

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3 years ago

Assuming that an acetic acid solution is 12% by mass and that the density of the solution is 1.00 g/mL, what volume of 1 M NaOH

Doss [256]

Explanation:

Let us assume that total mass of the solution is 100 g. And, as it is given that acetic acid solution is 12% by mass which means that mass of acetic acid is 12 g and 88 g is the water.

Now, calculate the number of moles of acetic acid as its molar mass is 60 g/mol.

No. of moles = $\frac{mass}{\text{molar mass}}$

= $\frac{12 g}{60 g/mol}$

= 0.2 mol

Molarity of acetic acid is calculated as follows.

Density = $\frac{mass}{volume}$

1 g/ml = $\frac{100 g}{volume}$

volume = 100 ml

Hence, molarity = $\frac{\text{no. of moles}}{volume}$

= $\frac{0.2 mol}{0.1 L}$

= 2 mol/l

As reaction equation for the given reaction is as follows.

$NaOH + CH_{3}COOH \rightarrow CH_{3}COONa + H_{2}O$

So, moles of NaOH = moles of acetic acid

Let us suppose that moles of NaOH are "x".

$x \times 1 M = 10 mL \times 2 M$ (as 1 L = 1000 ml)

x = 20 L

Thus, we can conclude that volume of NaOH required is 20 ml.

6 0

2 years ago

For which of the following processes would you expect there to be an increase entropy

adoni [48]

CaBr2(s) Ca+2(aq)+2Br-(aq) which means, Solid is turning into free ions so entropy is increasing .

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2 years ago

Which of the following is an example of the electrostatic force acting in a atom

kumpel [21]

Electrostatic forces work on anything that is charged.
Usually only protons and electrons, but also some other elementary particles.

d. a proton attracting an electron

7 0

2 years ago

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Niven wants to calculate the mass of MgO that is produced by the burning of 28.0 g of Mg. What is the first step in Niven’s calc

Elanso [62]

I would say that Niven would have to calculate the atomic weights of Mg and O and then the total weight of MgO to get the percent of oxygen and then that way get a proportionate amount of the 28 grams of oxygen required to bond with the Mg and then add together the weight of Mg which would be 28.0 grams plus the weight of oxygen.

8 0

2 years ago

Read 2 more answers