2 years ago

hcl is added to a solution containing barium and calcium ions. if a precipitate is formed, what is it?

1 answer:

6 0

No ppt is formed.

BaCl2 and NaCl(the products formed) are highly soluble in water due to the ionic bond present in their bond causing high polarity.

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Market researchers selected a random sample of people from region a and a random sample of people from region b. The researchers

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2 years ago

What does the SAT reading test requires students to do?

Vlad1618 [11]

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15. For a random sample of n = 64, find the probability of a sample mean being

mart [117]

Answer:

0.9726

Explanation:

The computation of the probability of a sample mean is shown below:

$P(\bar x < 24.3)$

To find the probability first we have to determine the z score which is

$z = \frac{\bar x - \mu_{\bar x}}{\sigma_{\bar x}} \\\\ = \frac{\bar x - \mu }{\frac{\sigma}{\sqrt{n} } } \\\\ = \frac{24.3 - 24}{\frac{1.25}{\sqrt{64} } }$