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4 years ago

Witch element(s) are not balanced\ in this equation?:fe2o3 + 3co → fe + 3co2 plz answer :3

Chemistry

1 answer:

Lostsunrise [7]4 years ago

3 0

Fe and o
it should be 2fe2o3 + 6co -> 2fe2 + 6co2
I think. I am not sure

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The diagram shows four different locations in an atom. A shaded circle is shown, labeled nucleus. Two small points labeled one a

pshichka [43]

<h2>Answer : 2</h2><h3>Explanation :</h3>

The shaded area labeled as 2 is likely to have subatomic particle that are constantly in motion.

The subatomic particles of the atom that are constantly in motion are called as electrons. The probability of finding electrons in the region shaded and labeled as 2. Electrons are in continuous motion in orbits around the nucleus of the atom. Therefore, the answer is 2.

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3 years ago

Read 2 more answers

4 × 10-5 cm in scientific notation

matrenka [14]

Answer:

400000

Explanation:

First, figure out what 10^5 is. It is 100000. Then multiply it by 4 and there is your answer!

Also if it is 4x10^-5, it is 0.00004!

Oh yeah! If you want it to be in scientific notation, it is: 4x10^5

Since that I didn't quite understand what you are trying to question, it is either 4x10^5 or 4x10^-5!

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3 years ago

How many moles is 287.7 grams of Iridium (Ir)?

OLga [1]

<h3>Answer:</h3>

1.497 mol Ir

<h3>General Formulas and Concepts:</h3>

<u>Math</u>

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right<u> </u>

<u>Chemistry</u>

<u>Atomic Structure</u>

Reading a Periodic Table

<u>Stoichiometry</u>

Using Dimensional Analysis

<h3>Explanation:</h3>

<u>Step 1: Define</u>

287.7 g Ir

<u>Step 2: Identify Conversions</u>

[PT] Molar Mass of Ir - 192.22 g/mol

<u>Step 3: Convert</u>

Set up: $\displaystyle 287.7 \ g \ Ir(\frac{1 \ mol \ Ir}{192.22 \ g \ Ir})$
Multiply/Divide: $\displaystyle 1.49672 \ mol \ Ir$

<u>Step 4: Check</u>

<em>Follow sig fig rules and round. We are given 4 sig figs.</em>

1.49672 mol Ir ≈ 1.497 mol Ir

8 0

3 years ago

Read 2 more answers

For the endothermic reaction below, when does le chatelier's principle predict that there will be an increase in the number of m

jeka94

When there is a decrease in the pressure or an increase in volume. As the container gets bigger, it will want to increase the pressure to get back to equilibrium. For that to happen, it will have to increase the number of gas moles, and since co2 is the only has in that equation, it will increase.

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4 years ago

The water that moves over the land is and carries particales is a called a

yulyashka [42]

It is called a runoff

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3 years ago