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nekit [7.7K]
3 years ago
12

A force Exerted by objects due to their mass: A. Gravity B. Friction C. Buoyant Force C. Spring Force

Chemistry
2 answers:
Sindrei [870]3 years ago
5 0
I believe it is spring force. hope this helps.
kipiarov [429]3 years ago
3 0
The answer is A. Gravity
The gravitioal force that an object exerted will increase as the object is increasing in sizre.
Which means that if object A has two-times more mass than object B, Object A will has twice as much gravitational pull if compared to object B.
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6. An environmental chemist needs a carbonate buffer of pH 10.00 to study the effects of acid rain on limestone-rich soils. To p
pishuonlain [190]

Answer:

[Na₂CO₃] = 0.094M

Explanation:

Based on the reaction:

HCO₃⁻(aq) + H₂O(l) ↔ CO₃²⁻(aq) + H₃O⁺(aq)

It is possible to find pH using Henderson-Hasselbalch formula:

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pH is desire pH and pKa (<em>10.00</em>) is -log pka = -log 4.7x10⁻¹¹ = <em>10.33</em>

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Replacing these values:

10.00 = 10.33 + log₁₀ [Na₂CO₃] / [0.20]

<em> [Na₂CO₃] = 0.094M</em>

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3 years ago
What is a total ionic equation ?!
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A block of wood has a volume of 55 cm3 and a mass of 550 g. What would be its density? Answer in units of g/cm3.
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given,

volume (V)=55cm3

mass(m)=550g

now density=m/v

=550/55

=10 g/ cm3

8 0
3 years ago
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