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If you are looking for the answer of how calculator is made, you’ve got the right page. We have approximately 10 FAQ regarding how calculator is made. Read it below.

## 24. Almirah was asked by her teacher to find theproduct

product of 79 and 81. Due to the unavailability of
calculators in their school, she really had hard time
to identify the product. Suddenly, Dante raised his
hand and quickly gave the answer – 6,399. How did
Dante obtain his answer easily and quickly?
two identical terms.
a.​

D. po

Step by step explanation

## 3. What is the commission made on a sale worth

Ask: 3. What is the commission made on a sale worth Php2 250 with an 8%
commission rate?
4. Aya purchased a calculator worth Phpl 500. It has a 3% tax. How much
is the tax?
5. A certain bank pays 8% annual interest on time deposit. How much
interest will it pay a client at the of 3 years for an investment of
Php85 000?​

Step-by-step explanation:

2,250 X 8% = 180

500 X 3% = 15

85,000 X 8% X 3 = 20,400

## aper. 1. How many different ways can a President and

Ask: aper. 1. How many different ways can a President and a Vice- president be selected for classroom officers if there are 30 students in a class? 2. In how many ways can 4 students be seated at around table? 3. How many arrangements can be made from the word CALCULATOR?​

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## 13. How many arrangement can be made from the word

Ask: 13. How many arrangement can be made from the word CALCULATOR?
A. 453, 600
B. 226, 800 C. 113, 400 D. 56, 700​

A. 453, 600 is the answer

## how many aranggements can be made from the word calculator​

3628800 arrangements

Step-by-step explanation:

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388910

Step-by-step explanation:

Beacuse is the finish

## . Calculate how many grams of iron can be made

Ask: . Calculate how many grams of iron can be made from 16.5 grams of
Fe2O3 by the following equation. Fe2O3 + 3 H2 ————-> 2 Fe + 3 H2O

## Stoichiometry

### Discussion:

Stoichiometry is the quantitative study of reactants and products in a chemical reaction.

Whether the units given for the reactants (or products) are moles, grams, liters (for gases), or some other units, we use moles to calculate the amount of product formed in a reaction. This approach is called the mole method, which means simply that the stoichiometric coefficients in a chemical equation can be interpreted as the number of moles of each substance. For example, industrial ammonia is synthesized from hydrogen and nitrogen as follows:

[tex]text{N}_{2}(g) + 3text{H}_{2}(g) → 2text{NH}_{3}(g)[/tex]

The stoichiometric coefficients show that one molecule of [tex]text{N}_{2}[/tex] reacts with three molecules of [tex]text{H}_{2}[/tex] to form two molecules of [tex]text{NH}_{3}[/tex]. It follows that the relative numbers of moles are the same as the relative number of molecules:

[tex]begin{array}{ccc} text{N}_{2} & + & 3text{H}_{2} & → & 2text{NH}_{3} \ text{1 molecule} & & text{3 molecules} & & text{2 molecules} \ 6.022 × 10^{23} : text{molecules} & & 3(6.022 × 10^{23}) : text{molecules} & & 2(6.022 × 10^{23}) : text{molecules} \ text{1 mol} & & text{3 mol} & & text{2 mol} \ end{array}[/tex]

Thus, this equation can also be read as “1 mole of [tex]text{N}_{2}[/tex] gas combines with 3 moles of [tex]text{H}_{2}[/tex] gas to form 2 moles of [tex]text{NH}_{3}[/tex] gas.” In stoichiometric calculations, we say that three moles of [tex]text{H}_{2}[/tex] are equivalent to two moles of [tex]text{NH}_{3}[/tex], that is,

[tex]text{3 mol} : text{H}_{2} bumpeq text{2 mol} : text{NH}_{3}[/tex]

where the symbol [tex]bumpeq[/tex] means “stoichiometrically equivalent to” or simply “equivalent to.” This relationship enables us to write the conversion factors

[tex]frac{text{3 mol} : text{H}_{2}}{text{2 mol} : text{NH}_{3}} : text{and} : frac{text{2 mol} : text{NH}_{3}}{text{3 mol} : text{H}_{2}}[/tex]

Similarly, we have [tex]text{1 mol} : text{N}_{2} bumpeq text{2 mol} : text{NH}_{3} : text{and} : text{1 mol} : text{N}_{2} bumpeq text{3 mol} : text{H}_{2}[/tex].

[tex]\[/tex]

### Problem:

Calculate how many grams of iron can be made from 16.5 grams of Fe₂O₃ by the following equation. Fe₂O₃ + 3 H₂ → 2 Fe + 3 H₂O

### Given:

[tex]text{mass of} : text{Fe}_{2}text{O}_{3} = text{16.5 g}[/tex]

balanced chemical equation: Fe₂O₃ + 3 H₂ → 2 Fe + 3 H₂O

### Required:

[tex]text{mass of Fe}[/tex]

### Solution:

Step 1: Calculate the molar mass of Fe₂O₃ and Fe.

For Fe₂O₃

molar mass of Fe₂O₃ = (55.85 g/mol × 2) + (16.00 g/mol × 3)

molar mass of Fe₂O₃ = 159.7 g/mol

For Fe

molar mass of Fe = 55.85 g/mol × 1

molar mass of Fe = 55.85 g/mol

Step 2: Calculate the mass of Fe formed by using dimensional analysis (factor-label method).

Since [tex]text{1 mol} : text{Fe}_{2}text{O}_{3} bumpeq text{2 mol Fe}[/tex], the mass of Fe formed is

[tex]text{mass of Fe} = text{16.5 g} : text{Fe}_{2}text{O}_{3} × frac{text{1 mol} : text{Fe}_{2}text{O}_{3}}{text{159.7 g} : text{Fe}_{2}text{O}_{3}} × frac{text{2 mol Fe}}{text{1 mol} : text{Fe}_{2}text{O}_{3}} × frac{text{55.85 g Fe}}{text{1 mol Fe}}[/tex]

[tex]boxed{text{mass of Fe = 11.5 g}}[/tex]

[tex]\[/tex]

#CarryOnLearning

## You just made a big progress! At this point, let

Ask: You just made a big progress! At this point, let us gather what you have learned by doing the activities.

How would the image appear in the microscope compared to the position of the specimen? How is magnification calculated?
pa help po nito asap

It will appear inverted compared to the position of the specimen.

It is calculated by multiplication.

Explanation:

Example: The Eye piece has 10x magnification and the lens has 40x magnification. Then, that would be 10x×40x=400x magnification.

Hope it helps( ╹▽╹ )

1. Calculation of Markup Percentage

grade 7 students made 25 pieces cupcakes. they sold it for 20.00per piece. they spent 15.00per piece of cupcakes. what will be the mark up pecentage? how much will be the total profit?

2. Calculate the Mark down price

Loren put 10% mark down on her Chocolate cake. the sale price is 58.5 pesos per tub. what will be the original price per tub of Chocolate cake?​

Their total profit is 125 pesos.

Explanation:

25 x 20 and 25 x 15 = 500 – 375 = 125

## 3. How many arrangements can be made from the word

Ask: 3. How many arrangements can be made from the word CALCULATOR? 4. How many ways can 10 students line up in a food counter?​

3. 453600 arrangements

4. 3628800 ways

Step-by-step explanation:

3. The word CALCULATOR has 10 letters with 2 C’s, 2 A’s, and 2 L’s, so the number of arrangements is

10! / (2!2!2!) = 453600.

4. 10! = 3628800 ways

## How many arrangements can be made from the word CALCULATOR?a.

a. 453,600 b. 553,640
c. 907,200
d. 302,400​

## ✨QUESTION✨

How many arrangements can be made from the word CALCULATOR?

a. 453,600 b. 553,640

c. 907,200

d. 302,400