Balanced rock sits on a thin spike of rock in a canyon what forces keep the rock balanced on its tiny pedestal

SAT

1 answer:

saw5 [17]3 years ago

7 0

I believe gravity is the correct answer

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When 2. 0 m aqueous solutions of sodium bicarbonate and hydrochloric acid react, it produces carbon dioxide, water and sodium ch

OLEGan [10]

The number of mole of carbon dioxide, CO₂ formed from the reaction is 0.0632 mole.

<h3>How to determine the mole of NaHCO₃</h3>

Molarity of NaHCO₃ = 2 M
Volume = 31.6 mL = 31.6 / 1000 = 0.0316 M
Mole of NaHCO₃ =?

Mole = Molarity x Volume

Mole of NaHCO₃ = 2 × 0.0316

Mole of NaHCO₃ = 0.0632 mole

<h3>How to determine the mole of CO₂</h3>

NaHCO₃ + HCl —> CO₂ + H₂O + NaCl

From the balanced equation above,

1 mole of NaHCO₃ reacted to produce 1 mole of CO₂.

Therefore,

0.0632 mole of NaHCO₃ will also react to produce 0.0632 mole of CO₂.

Thus, 0.0632 mole of CO₂ was obtained from the reaction

Learn more about stoichiometry:

brainly.com/question/14735801

8 0

2 years ago

The math department at a small school has 5 teachers. The ages of these teachers are 23, 34, 37, 42, and 58. Suppose you select

denis23 [38]

The graph that shows the sampling distribution of the sample minimum age is; Option C Graph

<h3>Sampling distribution</h3>

We are given the ages of the 5 teachers as;

23, 34, 37, 42 and 58.

The options that show the sampling distribution of the sample minimum age has been attached.

Since 4 teachers will be selected out of the 5, it means that the minimum age of the 4 selected teachers will be 23 years of age 4 time while the minimum age will be 34 if the 23 year old teacher is not selected.

In conclusion, the sampling distribution for this scenario of minimum age should show 4 teachers at the 23 year mark and 1 teacher at the 34 year mark.

Read more about sampling distribution at; brainly.com/question/15077367