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slavikrds [6]
3 years ago
5

What is constant speed?

Chemistry
2 answers:
Leno4ka [110]3 years ago
7 0

Answer:

When its instantaneous speed has the same value throughout its journey.

Explanation:

An object is travelling at a steady or constant speed when its instantaneous speed has the same value throughout its journey. For example, if a car is travelling at a constant speed the reading on the car's speedometer does not change.

Tems11 [23]3 years ago
6 0

Answer:

When the speed of an object remains the same for a certain distance of time

Explanation:

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The saltwater is a homogeneous or a heterogeneous mixture
ddd [48]
Homogeneous because it is unable to be distinguished of the components Water and Salt
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3 years ago
Which intermolecular force would affect the boiling point the least?
Maksim231197 [3]

Answer:

I'm pretty sure its h bonding. however I could very welp see it being Van der Waals

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3 years ago
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In the laboratory, a general chemistry student measured the pH of a 0.486 M aqueous solution of triethanolamine, C6H15O3N to be
STatiana [176]

Answer:

Kb = 6.22x10⁻⁷

Explanation:

Triethanolamine, C₆H₁₅O₃N, is in equilibrium with water:

C₆H₁₅O₃N(aq) + H₂O(l) ⇄ C₆H₁₅O₃NH⁺(aq) + OH⁻(aq)

Kb is defined from concentrations in equilibrium, thus:

Kb = [C₆H₁₅O₃NH⁺] [OH⁻] / [C₆H₁₅O₃N]

The equilibrium concentration of these compounds could be written as:

[C₆H₁₅O₃N] = 0.486M - X

[C₆H₁₅O₃NH⁺] = X

[OH⁻] = X

pH is -log [H⁺], thus, [H⁺] = 10^-pH = 1.820x10⁻¹¹M

Also, Kw = [OH⁻] ₓ [H⁺];

1x10⁻¹⁴ = [OH⁻] ₓ [H⁺]

1x10⁻¹⁴ = [OH⁻] ₓ [1.820x10⁻¹¹M]

5.495x10⁻⁴M = [OH⁻], that means <em>X = 5.495x10⁻⁴M</em>

Replacing in Kb formula:

Kb = [5.495x10⁻⁴M] [5.495x10⁻⁴M] / [0.486M-5.495x10⁻⁴M]

<em>Kb = 6.22x10⁻⁷</em>

<em></em>

5 0
3 years ago
Question in the image
Sergeeva-Olga [200]

do everything
eh
t

b
b
eh


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but

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3 0
3 years ago
Na+ + Cl–  NaCl Which statement best describes the relationship between the substances in the equation?
ANTONII [103]

Answer : The number of sodium ions is equal to the number of formula units of salt.


Explanation : In the given reaction of NaCl the statement which describes it the best is that the number of sodium ions is found to be same along with the formula units in the product side.


Na^{+} + Cl^{-} ----> NaCl.


Its clear from the equation that one mole of Na and one mole of Cl combines together to give the product, which is one mole of NaCl. The number of ions on both the sides are equal.

3 0
3 years ago
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