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VashaNatasha [74]
3 years ago
7

A large, semi-truck hauling a full load and a small car are traveling in the same direction. As they approach a sharp curve in t

he road, which will have a harder time changing direction and why?
Chemistry
1 answer:
WARRIOR [948]3 years ago
7 0
The semi will have the hardest time changing direction because of its mass. The more mass there is, the more effort it takes to accelerate and decelerate as well as change direction.
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What is the mass if 1.72 moles of sodium nitrate
alexgriva [62]

Answer:

146 g

Explanation:

Step 1. Calculate the <em>molar mass</em> of NaNO₃

Na =                    22.99

  N =                     14.01

3O = 3 × 16.00 = 48.00

               Total = 85.00 g/mol

Step 2. Calculate the <em>mass</em>  of NaNO₃

Mass of NaNO₃ = 1.72 × 85.00/1

Mass of NaNO₃ = 146 g

8 0
3 years ago
Read 2 more answers
Effective nuclear charge, Zeff, is defined as:
Alborosie

Answer:

The effective nuclear charge for a valence electron in oxygen atom: Z_{eff} = 4.55

Explanation:

Effective nuclear charge  [Z_{eff}] is the net nuclear charge experienced by the electron in a given atom. It is always less than the actual charge of the nucleus [Z], due to shielding by electrons in the inner shells.

<em>It is equal to the difference between the actual nuclear charge or the atomic number (Z) and the shielding constant (s).  </em>

\Rightarrow Z_{eff} = Z - s

<u>For an oxygen atom</u>-

Electron configuration: (1s²) (2s² 2p⁴)

<em>The atomic number (actual nuclear charge): </em>Z = 8

The shielding constant (s) for a valence electron can be calculated by using the Slater's rules:

⇒ s = 5 × 0.35 + 2 × 0.85 = 1.75 + 1.7 = 3.45

<u><em>Therefore, the effective nuclear charge for a valence electron in oxygen atom is:</em></u>

Z_{eff} = Z - s = 8 - 3.45 = 4.55

<u>Therefore, the effective nuclear charge for a valence electron in oxygen atom:</u> Z_{eff} = 4.55

6 0
3 years ago
When balance the following chemical equations N2+O2= NO2 the coefficient for O2 is
Papessa [141]

Answer:

2

Explanation:

N₂ + O₂ --->  NO₂

balance

N₂ + 2O₂ ---> 2NO₂

4 0
2 years ago
I´LL GIVE BRAINLIEST ORDER THE FOLLOWING LIQUIDS FROM MOST DENSE TO LEAST DENSE: WATER, PANCAKE SYRUP, COOKING OIL, MILK, DISH S
NeX [460]

Answer:

sope syrup cooking oil milk water

Explansation:

5 0
3 years ago
How many phosphorus atoms are present ?
Law Incorporation [45]

Answer:

The answer is option 2.

Explanation:

(PO4)2 = P2O8

Therefore, there are 2 Phosphorus atoms present .

3 0
3 years ago
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