Answer:
The answer is
<h2>0.2 g/mL</h2>
Explanation:
The density of a substance can be found by using the formula
<h3>
</h3>
From the question
mass of object = 20 g
volume = 100 mL
Substitute the values into the above formula and solve
That's
We have the final answer as
<h3>0.2 g/mL</h3>
Hope this helps you
Answer:
Explanation:
Hello!
In this case, since the neutralization reaction between hydrofluoric acid and barium hydroxide (both aqueous) produce insoluble barium fluoride and liquid water, we can write the chemical reaction as follows:
However, it needs to be balanced as hydrogen and fluorine are not properly balanced, therefore, we obtain:
Best regards!
Answer:
Molecules in both the metal and the surrounding air will start moving at higher speeds.
Explanation:
Temperature is a measure of the average kinetic energy of the molecules in a body. Thus, as the temperature of a body increases, its molecules tend to move faster.
At a high temperature of 150°C, the molecules in the metal hot plate move faster. Similarly, this heat is also transferred to the surrounding air molecules and they too start moving faster.
Therefore at 150°C, molecules in both the metal and the surrounding air will start moving at higher speeds.
Answer:
B. 0.16 M H₂SO₄.
Explanation:
- The rate of the reaction depends directly on the concentration of the reactants.
Rate ∝ [Reactants].
So, the reaction occurs fastest in the highest concentration of H₂SO₄.
<em>So, the answer is: B. 0.16 M H₂SO₄.</em>
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