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Ede4ka [16]
3 years ago
7

Which of the following correctly describes the role of scientific models in the advancement of technology?

Chemistry
1 answer:
ryzh [129]3 years ago
7 0
Hello There!

Based on the information i'd say it's C too.
Models are representations of ideas and are used to explain a phenomena sometimes.

Hope This Helps You!
Good Luck :)
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0.67 moles of hydrogen gas.

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Nitrogen (N) and hydrogen (H) react with each other to produce ammonia (NH3). This reaction is shown in an equation as N2 + 3H2
Anika [276]
There are 2 Nitrogen atoms (or parts) of Nitrogen on the left side of the equation, and 2 Hydrogen, and only one Nitrogen but three Hydrogen on the other side. Where did the extra Nitrogen go? Where did that Hydrogen come from? The answer is Stoichiometry. 
N2 + H2 --> NH3 has to be balanced, so we add coefficients to the reactants and products, which indicate in what ratio they are consumed in the reaction. They effectively multiply the subscripts on the elements.
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3 0
4 years ago
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Which of the following lists elements in order of increasing malleability?
hodyreva [135]

Malleability is the property due to which substances tend to hammered into thin sheets when pressure is applied. Malleability is observed in metal as the metal atoms are bound by metallic bonds. The layers of metal atoms can roll over each other without breaking the metal bond when pressure is applied. In the periodic table malleability decreases as the metallic nature decreases. Among the given metals Al is the most metallic element, followed by Zinc an Carbon is a non metal. Therefore, the order of increasing malleability will be C, Zn, Al


8 0
3 years ago
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earnstyle [38]
Answer is: the ratio of amount NaOH reacting per unit amount FeCl₃ is 3 mol NaOH /1 mol FeCl₃.

Balanced chemical reaction:
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NaOH is sodium hydroxide.
FeCl₃ is iron(III) chloride.
Coefficient for sodium hydroxide is three and for iron(III hydroxide is one.
8 0
3 years ago
What allows two or more atoms to be held together?
eduard

Answer:

Atoms come together to form molecules because of their electrons. Electrons can join (or bond) atoms together in two main ways. When two atoms share electrons between them, they are locked together (bonded) by that sharing. These are called covalent bonds.

Explanation:

8 0
3 years ago
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