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2 years ago

What does 2n² ?denote explain it with the help of two example

Chemistry

1 answer:

Lana71 [14]2 years ago

8 0

Answer:

2n² means 2 × n × n . the power on the n represent the no. of time it is multiplied.

for ex 3x² = 3 × x × x

4x⁴ = 4 × X× X × X× X

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Does a falcon eat a lizard

crimeas [40]

Answer:

yes

Explanation:

The most common prey item is pigeons. Peregrine falcons will also eat small reptiles and mammals.

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3 years ago

Read 2 more answers

How many moles of n are in 0.185 g of n2o?

pickupchik [31]

The mass of $N_{2}O$ is 0.185 g.

To calculate the number of moles first calculate the molar mass of $N_{2}O$ .

$M_{N_{2}O}=2\times M_{N}+M_{O}$

Molar mass of nitrogen and oxygen is 14 g/mol and 16 g/mol respectively

Thus, $M_{N_{2}O}=2\times 14 g/mol+18 g/mol=44 g/mol$

Now, number of moles can be calculated from mass and molar mass as follows:

$n=\frac{m}{M}=\frac{0.185 g}{44 g/mol}=0.0042 mol$

Therefore, number of moles of 0.185 g $N_{2}O$ is 0.0042 mol.

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3 years ago

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A common laboratory method for preparing a precipitate is to mix solutions containing the component ions. Does a precipitate for

laiz [17]

Answer:

CaF2 will not precipitate

Explanation:

Given

Volume of Ca(NO3)2 $= 10$ ml

Molar concentration of Ca(NO3)2 $= 0.001$

Volume of NaF $= 10$ ml

Molar concentration of NaF $= 0.0001$

Ksp for CaF2 $= 3.2 * 10^ {-11}$

CaF2 will precipitate if Q for the reaction is greater than ksp of CAF2

Moles of calcium ion

$= 10 * 0.001\\= 0.01$

$[Ca2+] = \frac{0.01}{10 + 10} \\= \frac{0.01}{20} \\= 5 * 10^{-4}$

Moles of F- ion

$= 10 * 0.0001\\= 0.001$

$[F-] = \frac{0.001}{10 + 10} \\= \frac{0.001}{20} \\= 5 * 10^{-5}$

$Q = [Ca2+] [F-]^2\\= (5 * 10^{-4}) * (0.5* 10^-4)\\= 1.25 * 10^{-12}$

Q is lesser than Ksp value of CaF2. Hence it will not precipitate

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2 years ago

1. Gases are made up of molecules which are relatively far apart.

bulgar [2K]

The answer is A) 1...

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2 years ago

A formal operational thinker and a concrete operational thinker are both presented with three beakers containing red liquid and

Jlenok [28]

Answer:

The formal thinker would take a systematic approach in the combination of the liquids, thereby eliminating several unnecessary combinations that the concrete thinker would definitely combine.

Explanation:

The formal operational stage in thinking begins when a child gets to the age of 12 and continues to adulthood. The formal operational stage provides an individual with the ability to think abstractly by manipulating ideas in their head without concretely manipulating it. A concrete would have to see something to be able to manipulate any ideas.

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3 years ago

What does 2n² ?denote explain it with the help of two example​

What does 2n² ?denote explain it with the help of two example