4 years ago

PLEASE HELP!!!

Chemistry

1 answer:

lora16 [44]4 years ago

5 0

Answer:

Yes; the graph shows a strong positive linear association.

Explanation:

Majority of the points outline a line of the graph. There are only a few outliers.

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What is the pressure of a 3.5 mmol sample of ethane (C2H6) gas contained in a 0.500 L flask at 298 K?

-BARSIC- [3]

P = nRT/V

P = 3.5 x 10^-3 x 0.082 x 298 /0.5

P = 0.171 m Hg

P = 171 mm Hg

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3 years ago

Please help, I’m a bit confused, lol

Mashutka [201]

Explanation:

option A skeleton system is correct option

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2 years ago

How many protons and neutrons are in 119_Sn? O a. 50 n and 119 p O b. 50 p and 169 1 O c. 50 p and 69 O d. 50 n and 169 p O e. N

Anastaziya [24]

<u>Answer:</u> The given isotope of tin has 50 protons and 69 neutrons.

<u>Explanation:</u>

Atomic number is defined as the number of protons or number of electrons that are present in neutral atom. It is represented as Z.

Atomic number = Number of protons = Number of electrons

Mass number is defined as the sum of number of protons and number of neutrons. It is represented as A.

Mass number = Number of protons + Number of neutrons

We are given:

An isotope having representation $_{50}^{119}\textrm{Sn}$

Mass number of Sn = 19

Atomic number = 50

Number of neutrons = Mass number - Atomic number = 119 - 50 = 69

Hence, the given isotope of tin has 50 protons and 69 neutrons.

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3 years ago

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leonid [27]

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3 years ago

Are the intersection of any two half-planes necessarily a half-plane

Mashutka [201]

Answer;

The answer is No,

Explanation;

-The intersection of two parallel half-planes A and B is either a half-plane (either A or B, when A and B have similar orientation) or the empty set (when A and B have opposite orientation).

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4 years ago