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saveliy_v [14]
2 years ago
5

When an action force occurs, the reaction force is always Question 6 options: A.in the same direction as the action force. B.app

lied to the same object as the action force. C.nonexistent. D.equal and opposite to the action force.
Chemistry
2 answers:
Mrac [35]2 years ago
7 0
D. 100%, extremely sure. Because Newton's 3rd law states every force has an equal and opposite reaction.
stepladder [879]2 years ago
4 0
<h2><u><em>D. Equal and Opposite is the correct answer</em></u></h2>
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What is the mass,in grams, of 2.75 L of CO2 gas
frez [133]

Answer:

mass of CO₂ = 5.402 g

Explanation:

At STP, 1 mole of any gas takes up 22.4L of volume

Thus, 1 mole = 22.4 L

1 L = 1 mole ÷ 22.4

Therefore, 2.75 L = 2.75 mole ÷ 22.4 = 0.123 moles

Molecular weight of CO₂ = 44 g/mole

mass of CO₂ = molecular weight * number of moles = 44 g/mole * 0.123 moles

mass of CO₂ = 5.402 g

3 0
3 years ago
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zepelin [54]
24. <span>Valence electrons are most loosely held by the atom and are involved in chemical reactions. Chemical reactions occur when valence electrons are shared between atoms. The number of valence electrons determines how these reactions take place and what kind of bonds they form.

25 </span><span>Sodium has one valence electron and chlorine has seven valence electrons. The Ione valence electron from sodium is lost and is transferred to the chlorine atom. The result is a sodium ion with a charge of 1+ and a chloride ion with a charge of 1-. The oppositely charged ions attract each other and the charges balance to make a compound that is electrically neutral.

26. </span><span>Ionic compounds have high melting points and high boiling points compared to molecular compounds. Ionic compounds that are dissolved in water or melted will conduct electricity. Molecular compounds do not conduct electricity in either case. 

27. </span><span>A covalent bond is formed when two atoms share valence electrons. Neither atom loses electrons or takes electrons from the other. No charged particles form. In an ionic bond, one or more electrons are transferred from one atom to another. Atoms that lose electrons become positively charged ions, and atoms that gain electrons become negatively charged ions. These oppositely charged particles then attract each other.

28. </span><span>A metal crystal consists of positively charged metal ions embedded in a "sea" of loosely held valence electrons that can move around easily. Heat travels through materials as the increased motion of the particles in the hotter parts of the material is passed along to the particles in the cooler parts. In a metal, since particles are easily set in motion, heat is easily transferred or conducted. The same is true for the conduction of electricity. Electricity can flow when charged particles, such as electrons, are free to move. Since the electrons in a metal crystal can move freely among the atoms, electricity is easily conducted.</span>
4 0
3 years ago
In a chemical reaction, exactly 2 mol of substance A react to produce exactly 3 mol of substance B. 2 A ⟶ 3 B How many molecules
Harman [31]

Answer:

There will be produced 1.71 moles of B which contain 1.03×10²⁴ molecules

Explanation:

The example reaction is:

2A → 3B

2 moles of A produce 3 moles of B

If we have the mass of A, we convert it to moles and then, we make the rule of three: 29.2 g / 25.6g/mol = 1.14 moles

Therefore 2 moles of A produce 3 moles of B

1.14 moles of A will produce (1.14 . 3) / 2 = 1.71 moles of B are produced

Now we can determine, the number of molecules

1 mol has NA molecules (6.02×10²³)

1.71 moles have (1.71 . NA) = 1.03×10²⁴ molecules

4 0
3 years ago
A student wishes to prepare 25mL of 0.1M NaOH from 6M NaOH.
liraira [26]

Answer:

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Explanation:

Look at the charges and add them up

Na(OH) Na(OH)

7 0
2 years ago
This element has 3 electrons in its Lewis dot structure and is in the 3p orbital section.
Lynna [10]
The answer is Al. If it is a main group element with 3 electrons in its Lewis dot structure, it must be in group 3A. If it is in the 3p orbital section, then it must be in period 3, since the p orbital is a valence orbital and the number that preceeds it is the principal quantum number. Therefore, your answer is the element in period 3 and group 3A, which is aluminum.
3 0
2 years ago
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