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Kamila [148]
1 year ago
13

You have learned about Isaac Newton, Galileo, Nicolas Copernicus and Leonardo da Vinci in this lesson. Choose one of their contr

ibutions to science and explore it in more detail. Write a newspaper article to a class of third graders explaining the contribution in detail. The article should be 3 paragraphs in length and explain who the scientist is, what the contribution is, and why the contribution is still important to science. Include at least two images/graphics to support your article.
Chemistry
1 answer:
worty [1.4K]1 year ago
3 0

The most common contribution to science that Isaac Newton is known for the law of gravity and the Newtons laws of motion .

<h3>Who is Isaac Newton?</h3>

The scientist Isaac Newton was one of the most prominent English Scientists. The research of Isaac Newton spans across several aspects of physics such as gravity, relativity, optics and dynamics.

The most common contribution to science that Isaac Newton is known for the law of gravity and the Newtons laws of motion which lays the foundations of dynamics.

The works of Isaac Newton laid the foundation upon which the study of the macroscopic universe was mad possible,

Learn more about Isaac Newton:

brainly.com/question/11120407

#SPJ1

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Mrs. Rushing fills a balloon with hydrogen gas to demonstrate its ability to burn. Which combination could she use to produce th
ale4655 [162]

Answer:

Mg and HCI

Explanation:

3 0
3 years ago
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What is the sequence of coefficients that will balance the following decomposition reaction of dihydrogen monosulfide? H₂S ----&
RUDIKE [14]

8 S

In this case you must start balancing the sulfur to have 8 on each side of the reaction. So:

Answer:

Explanation:

The law of conservation of matter states that since no atom can be created or destroyed in a chemical reaction, the number of atoms that are present in the reagents has to be equal to the number of atoms present in the products.

Then, you must balance the chemical equation. For that, you must first look at the subscripts next to each atom to find the number of atoms in the equation. If the same atom appears in more than one molecule, you must add its amounts.  

The coefficients located in front of each molecule indicate the amount of each molecule for the reaction. This coefficient can be modified to balance the equation, just as you should never alter the subscripts.

By multiplying the coefficient mentioned by the subscript, you get the amount of each element present in the reaction.

Then, taking into account all of the above, you can determine the amount of elements on each side of the equation:

Left side: 2 H and 1 S

Right side: 2 H and 8 S

In this case you must start balancing the sulfur to have 8 on each side of the reaction. So:

8 H₂S → H₂ + S₈

Now the amount of elements on each side of the equation:

Left side: 16 H and 8  

Right side: 2 H and 8 S

Now you need to start balancing the hydrogen to get the same amount from each side of the reaction. So:

8 H₂S → 8 H₂ + S₈

Now the amount of elements on each side of the equation:

Left side: 16 H and 8  

Right side: 16 H and 8 S

<u><em>The balanced reaction is:</em></u>

<u><em>8 H₂S → 8 H₂ + S₈</em></u>

3 0
2 years ago
A 2.51 times 10^-2 L sample of a solution of Cu^ requires 3.30 times 10^-2 L of 0.132 M KMnO_4 solution to reach the equivalence
sergejj [24]

Answer:

0.868M Cu⁺

Explanation:

The reaction is:

KMnO₄ + 5Cu⁺ + 8H⁺ → 5Cu²⁺ + Mn²⁺ + K⁺ + 4H₂O

<em>Where 1 mol of KMnO₄ reacts with 5 moles of Cu⁺</em>

<em />

3.30x10⁻²L of 0.132M KMnO₄ are:

3.30x10⁻²L ×  (0.132mol KMnO₄ / L) = <em>4.356x10⁻³mol KMnO₄</em>

As 1 mol reacts with 5 moles of Cu⁺, moles of Cu⁺ are:

4.356x10⁻³mol KMnO₄ × (5mol Cu⁺ / 1mol KMnO₄) = <em>0.02178moles Cu⁺</em>

As these moles are in 2.51x10⁻²L, the starting concentration of the Cu⁺ solution is:

<em>0.02178moles Cu⁺ / </em>2.51x10⁻²L = <em>0.868M Cu⁺</em>

3 0
3 years ago
Which of these is a base <br> A) vinegar<br> B) ammonia <br> C)HCL<br> D)HNO3
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<span>B) ammonia is a base because it has a pH level greater than 7. </span>
8 0
3 years ago
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Chem help please!!!
emmainna [20.7K]

The balanced chemical equation for the reaction given is:

6Li (s) + N_{2}(g) --> 2Li_{3}N (s)

Moles of N_{2} = 33.6524 g * \frac{1 mol}{28 g} = 1.20187 mol N_{2}

Moles of Li = 58.7032 g Li * \frac{1 mol Li}{6.94 g Li} = 8.4587 mol Li

Determining the limiting reagent: The reactant that gives least amount of the product will be the limiting reactant.

Mass of Li_{3}N from N_{2} = 1.20187 mol N_{2}*\frac{2 mol Li_{3}N}{1 mol N_{2}}*\frac{34.83 g Li_{3}N}{1 mol Li_{3}N} =  83.7223 g Li_{3}N

Mass of Li_{3}N from Li =8.4587 mol Li *\frac{2 mol Li_{3}N}{6 mol Li} *\frac{34.83 g Li_{3}N}{1mol Li_{3}N}  = 98.2055 g Li_{3}N

N_{2} will be the limiting reactant and the mass of lithium nitride produced will be dependent on the mass of limiting reactant.

Therefore, mass of lithium nitride produced = 83.7223 g

8 0
3 years ago
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