Answer: they have a net positive charge
Explanation:
Answer:
2.5 grams
Explanation:
law of conservation of mass applies. the magnesium completely burns
In the given reaction, B + KL + H, the effect of adding further B is that it favors the forward reaction which means more products will be produced upon the addition. This obeys Le Chatelier's principle which <span>states that any disturbance incurred to the equilibrium system
shall be dealt such that the disturbance is countered to and attain equilibrium
again.</span>
As the mass<span> increases, the </span>object<span> is more likely to... As the </span>volume<span> increases, the </span>object<span> is more likely to... </span>If an object<span> has a density less than that of water, it will f</span>loat<span>. </span>If an object<span> has a density more than that of water, it will </span><span>sink. </span>
The mass of the sample is 84.3 g
<u>Explanation:</u>
We have the formula to find the mass
Q = mCΔT
where
Q denotes the energy absorbed or released
m denotes the mass of the sample
C denotes the Specific heat of sample
Δ
T denotes the
Temperature change
Q = mCΔT
Rewrite the equation as,
m
=
Q/
C
Δ
T
m=24000 J/4.186 J/g°C×
( 69.5 °C-0°C)
m=82.42
m=84.3 (based on the options)
The mass of the sample is 84.3 g
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