In a balanced chemical equation the numbers of individual particles

SAT

1 answer:

Rus_ich [418]2 years ago

5 0

Answer:

In a balanced chemical equation the number of individual particles and the number of moles of particles are represented by the COEFFICIENTS 

Explanation:

Please mark me brainliest

You might be interested in

Need help on my SAT test ! Those are words to choose from

Cerrena [4.2K]

Answer:

Innate

Explanation:

Innate best fits the answer because the cardinal uses the ability to find worms, thus, the cardinal was born with this ability- making it natural. Therefore, Innate would be the best choice.

4 0

3 years ago

Suppose that grade point averages of undergraduate students at one university have a bell-shaped distribution with a mean of 2.6

olga2289 [7]

Answer:

97.5% of the students have grade point averages that are at least 3.4

Explanation:

1. Find how many standard deviations is 3.4 from the mean, 2.62

$z-score=\frac{x-mean}{standard\text{ }deviation}$

$z-score=(3.4-2.62)/0.39=2$

2. Apply the empirical rule

The empirical rule, or 68 - 95 - 99.7 rule, states that, for a normal distribution (a bell-shaped distribution), 68% of the data are within one standar deviation of the mean, 95% of the data are within two standard deviations from the mean, and 99.7% of the data are within three standard deviations from the mean.

We calculated that 3.4 is 2 standard deviations from the mean.

Since 95% of the data are within 2 standard deviations from the mean, 5% of the data are out of the 2 standard deviations region; half of that (2.5%) are abovethe mean + 2 standard deviations

Hence, the grade point averages of 95% + 2.5% of the students are below the mean plus two standard deviations, and you can say that that is the percentage of students whose grade point averages are at least 3.4.