3 years ago

What characteristic is typical of metals?

Chemistry

1 answer:

notka56 [123]3 years ago

6 0

They can conduct electricity and usually have delocalized electrons

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You want to divide 10 by 4 to get the number of hours it will take for the water to get to the springs, which is 2.5, so it would take the water 2.5 hours to revel to it’s spring

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3 years ago

How many grams of oxygen would be needed to completely react with 18 grams of methane (CH4)?

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35.91 grams of oxygen

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3 years ago

A mileage test is conducted for a new car model. Thirty randomly selected cars are driven for a month and the mileage is measure

Leni [432]

Answer: $(27.81,\ 29.39)$

Explanation:

Given : Sample size : n= 30 , it means it is a large sample (n≥ 30), so we use z-test .

Significance level : $\alpha: 1-0.95=0.05$

Critical value: $z_{\alpha/2}=1.96$

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Standard deviation : $\sigma=2.2$

The formula to find the confidence interval is given by :-

$\overline{x}\pm z_{\alpha/2}\dfrac{\sigma}{\sqrt{n}}$

i.e. $28.6\pm (1.96)\dfrac{2.2}{\sqrt{30}}$

i.e. $28.6\pm 0.787259889321$

$\approx28.6\pm 0.79=(28.6-0.79,28.6+0.79)=(27.81,\ 29.39)$

Hence, the 95% confidence interval for the mean mpg in the entire population of that car model = $(27.81,\ 29.39)$

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3 years ago

What factors do you think should be considered in selecting a metal to use to reclaim copper? Which factor do you think is the m

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Aluminum

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2 years ago

Indicate the charge carried by the following atomic particles:

Dovator [93]

Answer:
A. Protons are positive and carry a charge of +1
B. Neutrons are neutral so carry a charge of 0
C. Electrons are negative and carry a charge of -1

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2 years ago

Read 2 more answers