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3 years ago

Pls who would like to be my friend. what is a limiting reagent?

Chemistry

1 answer:

Rzqust [24]3 years ago

7 0

Answer: The Limiting Reagent is the stuff that limits the solution of the reaction.

Ex: A potato pairs with a tomato. You have 4 potatoes and whatever amount of tomatoes, your solution will always for 4 pairs because potatoes is the limited reagent.

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How does a temperature rain forest differ from the taiga

nadya68 [22]

It is cold in Taiga and it doesn't rain a lot, It snows a lot

7 0

3 years ago

Read 2 more answers

The two isotopes of chlorine are LaTeX: \begin{matrix}35\\17\end{matrix}Cl35 17 C l and LaTeX: \begin{matrix}37\\17\end{matrix}C

Kay [80]

Answer: The percentage abundance of $_{17}^{35}\textrm{Cl}$ and $_{17}^{37}\textrm{Cl}$ isotopes are 77.5% and 22.5% respectively.

Explanation:

Average atomic mass of an element is defined as the sum of masses of each isotope each multiplied by their natural fractional abundance.

Formula used to calculate average atomic mass follows:

$\text{Average atomic mass }=\sum_{i=1}^n\text{(Atomic mass of an isotopes)}_i\times \text{(Fractional abundance})_i$ .....(1)

Let the fractional abundance of $_{17}^{35}\textrm{Cl}$ isotope be 'x'. So, fractional abundance of $_{17}^{37}\textrm{Cl}$ isotope will be '1 - x'

For $_{17}^{35}\textrm{Cl}$ isotope:

Mass of $_{17}^{35}\textrm{Cl}$ isotope = 35 amu

Fractional abundance of $_{17}^{35}\textrm{Cl}$ isotope = x

For $_{17}^{37}\textrm{Cl}$ isotope:

Mass of $_{17}^{37}\textrm{Cl}$ isotope = 37 amu

Fractional abundance of $_{17}^{37}\textrm{Cl}$ isotope = 1 - x

Average atomic mass of chlorine = 35.45 amu

Putting values in equation 1, we get:

$35.45=[(35\times x)+(37\times (1-x))]\\\\x=0.775$

Percentage abundance of $_{17}^{35}\textrm{Cl}$ isotope = $0.775\times 100=77.5\%$

Percentage abundance of $_{17}^{37}\textrm{Cl}$ isotope = $(1-0.775)=0.225\times 100=22.5\%$

Hence, the percentage abundance of $_{17}^{35}\textrm{Cl}$ and $_{17}^{37}\textrm{Cl}$ isotopes are 77.5% and 22.5% respectively.

6 0

3 years ago

Infer if the mineral Talc would be a good choice when building a statue outside?

ruslelena [56]

Talc is not a good choice when building a statue because the mineral Talc is one of the weakest minerals on the Mohs Scale with a hardness of 1 since it could be scratched by a fingernail, which means that when people build a statue with Talc, it could be easily broken down.

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3 years ago

How many moles are in 240g of CaCO3?

valkas [14]

Using the periodic table, find the molar mass of each compound in CaCO3

CA = 40

C = 12

O = 16

Molecular Mass = 40 + 12 + (16 x3) = 100 grams.

Number of moles = given mass / molecular mass

Number of moles = 240 g / 100g = 2.4 moles

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4 years ago

What’s the correct full electron configuration for an atom of zinc?

jonny [76]

Answer:

[Ar] 3d¹⁰ 4s²

Explanation:

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4 years ago