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3 years ago

How many grams of FeS2 are needed to react with 95 g O2?

Chemistry

1 answer:

Rainbow [258]3 years ago

4 0

Answer:

16.0 i think

Explanation:

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I need help on balacing equations

nevsk [136]

Answer: sorry hun can’t help with this I was asked different questions when I learned this :,)

Explanation: have a nice day

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2 years ago

When you do a displacement reaction with iron and copper what is the orange metal called

laiz [17]

It is called rust and it forms when water soaks into the metal forming a chemical reaction.

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3 years ago

Other than through sexual reproduction, how can variations in genetic material occur in a population?

melomori [17]

Answer:

Through their adaptations from their habitat; environment

Explanation:

Charles Darwin explains evolution and their genetic material evolves during the process. For example, fruit birds have narrow bills whilst seed-eating birds have big bills. The foods they eat forced their DNA to adapt with the system in order to survive.

5 0

3 years ago

How many moles are in 3.24 x 1020 particles of lead? (show work plz)

lesya [120]

<h3>Answer:</h3>

0.000538 mol Pb

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

Math

Pre-Algebra

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Chemistry

Atomic Structure

Avogadro's Number - 6.022 × 10²³ atoms, molecules, formula units, etc.

Stoichiometry

Using Dimensional Analysis

<h3>Explanation:</h3>

Step 1: Define

3.24 × 10²⁰ particles Pb (lead)

Step 2: Identify Conversions

Avogadro's Number

Step 3: Convert

Set up: $\displaystyle 3.24 \cdot 10^{20} \ particles \ Pb(\frac{1 \ mol \ Pb}{6.022 \cdot 10^{23} \ particles \ Pb})$
Multiply/Divide: $\displaystyle 0.000538 \ mol \ Pb$

Step 4: Check

Follow sig fig rules and round. We are given 3 sig figs.

Our final answer is in 3 sig figs, no need to round.

7 0

3 years ago

Several general characteristics of metabolic reactions or reaction pathways are listed below. sort them into the appropriate met

Kobotan [32]

Answers are:
Catabolism:
- generally exergonic (spontaneous): In this reactions energy is released.
- convert NAD+ to NADH. Electrons and protons released in reactions are attached to NAD+.
- generation of ATP. ATP is synthesis from ADP.
- convert large compounds to smaller compounds. Foe example starch to monosaccaharides.
Anabolism:
- convert NADPH to NADP+. Protons and electrons are used to make chemical bonds.
- convert small compounds to larger compounds.

8 0

3 years ago

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