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3 years ago

Place the following taxonomic ranks in order from most specific to least specific. A) Order; B) Phylum; C) Family

Chemistry

2 answers:

Troyanec [42]3 years ago

8 0

Answer:

Explanation:

b/c that is bad

Andrew [12]3 years ago

7 0

Here’s all of them: kingdom, phylum, classes, order, families, genus, and species

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How many kilograms of solvent would contain 0.43 mol of CaO in a 2.5 molality solution

dalvyx [7]

<h3>Answer:</h3>

0.024 kg CaO

<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>Aqueous Solutions</u>

Molarity = moles of solute / liters of solution

<u>Atomic Structure</u>

Reading a Periodic Tables
Using Dimensional Analysis

<h3>Explanation:</h3>

<u>Step 1: Define</u>

0.41 mol CaO

2.5 M Solution

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

1000 g = 1 kg

Molar Mass of Ca - 40.08 g/mol

Molar Mass of O - 16.00 g/mol

Molar Mass of CaO - 40.08 + 16.00 = 56.08 g/mol

<u>Step 3: Convert</u>

Set up: $\displaystyle 0.43 \ mol \ CaO(\frac{56.08 \ g \ Cao}{1 \ mol \ CaO})(\frac{1 \ kg \ CaO}{1000 \ g \ CaO})$
Multiply: $\displaystyle 0.024114 \ kg \ CaO$

<u>Step 4: Check</u>

<em>Follow sig fig rules and round. We are given 2 sig figs as our lowest.</em>

0.024114 kg CaO ≈ 0.024 kg CaO

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3 years ago

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When 0.313 g of Mg is heated strongly in a nitrogen (N2) atmosphere, a chemical reaction occurs. The product of the reaction wei

borishaifa [10]

Answer:

Mg₃N₂ (magnesium nitride)

Explanation:

M(total) = M(mg) + M (n)

M (n) = M(total) - M(mg)

= 0.433g - 0.313g

= 0.12g

mole (N) = 0.12g / 14.0067 g/mol

= 0.008567

mole Mg = 0.313g / 24.3050 g/mol

= 0.012878

Mg = 0.012878 / 0.008567

= 1.5

N = 0.008567 / 0.008567

= 1

multiply by 2 to get whole numbers

Mg = 1.5 × 2 = 3

N = 1 × 2 = 2

Mg₃N₂ (magnesium nitride)

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3 years ago

Which of the following statements about the elements in group 2 of the periodic table is true?

stiks02 [169]

Answer:

they all have two electrons in their outermost shell

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A nomenclatura para a estrutura seguinte, de acordo com o sistema da IUPAC é: (1 Ponto) CH3-CH2-CH2-CH2-CH2-CH-C-CH2-CH3 3,4-dim

REY [17]

Answer:

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Explanation:

#2 Thanks hope thus help

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3 years ago

What are the two conditions needed for sodium chloride to conduct electricity

ASHA 777 [7]

Answer:

Sodium chloride will conduct electricity only when it is in a liquid state or in solution, this is because the ions are free to move in this state, allowing them to carry charge and conduct electricity

Explanation:

hope this helped you learned this in 5th grade

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3 years ago

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