Answer:
48 mph
Explanation:
total time= 19/12 hr
distence- 76 miles
speed- D/T=76/19/12
which is 48mph
if my answer helps please mark as brainliest.
Answer: for question 4, the answer would most likely be movement of air, water and rock
Explanation:
Hello
its me
and alsooo
the awnser is
number 3 lol
The concentration (in M) of hydronium ions in a solution at 25. 0 °C with a POH of 3. 58 Is 3.8× 10⁻¹¹ M
pOH is the measure of basic nature of a solution by evaluating the [OH⁻] concentration.
pH is measure of acidic nature of a solution by evaluating the [H⁺] concentration. It is the negative logarithm of the hydroxide ion concentration. It gives hydronium ions on dissociation.
Given,
pOH = 3.58
Temperature = 25°C = 298K
We know that pH + pOH =14
pH + 3.58 = 14
pH = 10.42
pH is the negative logarithm of hydrogen ion concentration.
At 25°C, the relation of pH and [H⁺] concentration is as follows:
∴ pH = -log [H⁺]
⇒ 10.42 = -log [H⁺]
⇒log [H⁺] = -10.42
⇒ [H⁺] = antilog (-10.42)
⇒[H⁺] =3.8× 10⁻¹¹ M
The concentration (in m) of hydronium ions in a solution at 25. 0 °C with a POH of 3. 58 Is 3.8× 10⁻¹¹ M
Learn more about pH here, brainly.com/question/17144456
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Answer:
Explanation:
Hello!
In this case, since HCl and Pt react according to the following chemical equation:
Whereas PtClx is the compound containing Pt and Cl; thus, since 1.018 g out of 1.778 g correspond to Pt and therefore 0.760 g to chlorine, so we determine the empirical formula of this compound by firstly computing the moles of each element:
Now, we divide the each moles by those of Pt as the fewest ones in order to compute their subscripts in the empirical formula:
Thus, the required formula is:
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