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max2010maxim [7]
3 years ago
14

Where is the sun shining most directly when we are having winter in the Northern Hemisphere?

Chemistry
1 answer:
Anni [7]3 years ago
5 0
In the summer, in the southern hemisphere. when it is summer is the northern, it is winter in the southern. all year along, the most sun hits the equator, but when it is winter in the northern hemisphere (thats when Alaska goes dark because of no sun) there is summer in the southern Hemusphere such as continents like south america, india, africa, and places like that :)
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Sulfuric acid (H2SO4) has a molar mass of 98.1 g/mol. How many oxygen atoms are found in 75.0 g of H2SO4?
nekit [7.7K]

Answer:

18.33 ×10²³ atoms

Explanation:

Given data:

Molar mass of sulfuric acid = 98.1 g/mol

Mass of sulfuric acid = 75.0 g

Number of of oxygen atom present = ?

Solution:

Number of moles of sulfuric acid:

Number of moles = mass/molar mass

Number of moles = 75.0 g/ 98.1 g/mol

Number of moles =0.761 mol

one mole of  sulfuric acid  contain four mole of oxygen atom.

0.761 mol × 4 = 3.044 mol

1 mole = 6.022×10²³ atoms of oxygen

3.044 mol ×  6.022×10²³ atoms of oxygen / 1mol

18.33 ×10²³ atoms

3 0
3 years ago
How does a parallel circuit differ from a series circuit?
victus00 [196]

I believe it is B.  A series circuit has one path for electrons, but a parallel circuit has more then one path.

Could I Have brainliest?

6 0
3 years ago
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A science teacher showed the class how potassium chromate changes color when it’s temperature change . Which of the following st
GarryVolchara [31]

Answer:

its b

Explanation:

8 0
2 years ago
What can we use to help us predict the results of reaction when we put metals into competition?
Effectus [21]

The activity series of metals as well as the electrode potential of metals can be used to compare the reactivity of metals.

<h3>What is used in comparing reactivity of metals?</h3>

The reactivity of metals can be compared using their electrode potentials which is a measures of the ability of the metal to donate electrons to another metal.

When comparing the reactivity of metals, the metal with the lesser negative electrode potential will be more reactive than another with a greater negative or positive electrode potential.

Therefore, the activity series of metals as well as the electrode potential of metals can be used to compare the reactivity of metals.

Learn more about activity series of metals at: brainly.com/question/17469010

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7 0
2 years ago
Which of these represents a chemical change?
Art [367]
Option C. A compound being separated into 2 elements represents a chemical change.
8 0
3 years ago
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