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2 years ago

Tell me What is an element?

Chemistry

1 answer:

Anarel [89]2 years ago

5 0

Answer:

Any substance that cannot be decomposed into simpler substances by ordinary chemical processes.

Another definition:

An element is the simplest pure substance which can neither be split nor built up from other simpler substances by chemical reaction

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If the pressure of the reactants increase, What happens to the product.

EastWind [94]

Increasing the pressure on a reaction involving reacting gases increases the rate of reaction. Changing the pressure on a reaction which involves only solids or liquids has no effect on the rate.

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3 years ago

Maggie is a member of her school’s environmental club and is interested in recycling. She asks the question, “How does exposure

miv72 [106K]

The best describes on why and how Maggie should change her question to make it a better scientific question is that t<span>he question involves giving an opinion about recycling, so it should be changed to rely only on facts. Hope it helps! </span>

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3 years ago

Read 2 more answers

Someone plz help me

marshall27 [118]

Answer:

B. 120 cm

Explanation:

The scale is 1 to 15, so when we are given the value of 8cm all you have to do it multiply 8 by 15 which leaves you with 120.

hope this helps!

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3 years ago

Can someone please answer this it’s due today please

Digiron [165]

Explanation:

g is inner layer

e is nucleons

cn we be friends

9307795291

4 0

2 years ago

Read 2 more answers

What is the mass in grams of 2.25 mol of the element iron, Fe?

scZoUnD [109]

<h3>Answer:</h3>

126 g Fe

<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>Chemistry</u>

<u>Atomic Structure</u>

Reading a Periodic Table
Using Dimensional Analysis

<h3>Explanation:</h3>

<u>Step 1: Define</u>

2.25 mol Fe

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

Molar Mass of Fe - 55.85 g/mol

<u>Step 3: Convert</u>

Set up: $\displaystyle 2.25 \ mol \ Fe(\frac{55.85 \ g \ Fe}{1 \ mol \ Fe})$
Multiply: $\displaystyle 125.663 \ g \ Fe$

<u>Step 4: Check</u>

<em>Follow sig fig rules and round. We are given 3 sig figs.</em>

125.663 g Fe ≈ 126 g Fe

4 0

3 years ago