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3 years ago

WILL GIVE BRAINLY

2 answers:

3 0

In order to compute mean, you have to add all values of the data set up and divide by the number of data values there are.

In this case, the total sum of all data values is: 81+88+69+65+87=390

The number of data values is 5

To compute mean: 390/5=78

The mean height of the corn stalks is 78cm (C)

Dmitry [639]3 years ago

3 0

The answer is C) 78, because to get the mean answer you have to add them all and what you get (390) you have to divide it by the amount of numbers (5).

Hope this helps you! Brainliest? :)

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A set of orbital for which the quantum number l=2 is

Kobotan [32]

Answer:

The second quantum number, known as the angular or orbital quantum number, describes the subshell and gives the magnitude of the orbital angular momentum through the relation. In chemistry and spectroscopy, ℓ = 0 is called an s orbital, ℓ = 1 a p orbital, ℓ = 2 a d orbital, and ℓ = 3 an f orbital.

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3 years ago

What volume of a 0.181 M nitric acid solution is required to neutralize 25.1 mL of a 0.167 M calcium hydroxide solution

Alika [10]

Answer:

46.32 mL

Explanation:

We'll begin by writing the balanced equation for the reaction. This is illustrated below:

2HNO₃ + Ca(OH)₂ —> Ca(NO₃)₂ + 2H₂O

From the balanced equation above,

The following data were obtained:

Mole ratio of the acid, HNO₃ (nA) = 2

Mole ratio of the base, Ca(OH)₂ (nB) = 1

Next, we shall write out the data obtained from the question. This includes:

Molarity of the acid, HNO₃ (Ma) = 0.181 M

Volume of the base, Ca(OH)₂ (Vb) = 25.1 mL

Molarity of the base, Ca(OH)₂ (Mb) = 0.167 M

Volume of the acid, HNO₃ (Va) =?

Finally, we shall determine the volume of the acid, HNO₃ as shown below:

MaVa/ MbVb = nA/nB

0.181 × Va / 0.167 × 25.1 = 2/1

0.181 × Va / 4.1917 = 2

Cross multiply

0.181 × Va = 4.1917 × 2

0.181 × Va = 8.3834

Divide both side by 0.181

Va = 8.3834 / 0.181

Va = 46.32 mL

Therefore, the nitric acid, HNO₃ required for the reaction is 46.32 mL

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3 years ago

Which Element is a member of the Alkali Metal Family?

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Answer:

the answer is Sodium (Na)

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4 years ago

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riadik2000 [5.3K]

<span>A. It increases the number of collisions between molecules.

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Answer:

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