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2 years ago

14

Which of the following substances has the characteristics shown in the chart? A. homogeneous mixture B. compound C. solution D.

heterogeneous mixture

1 answer:

notsponge [240]2 years ago

6 0

Lol I need help on this too

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What is the electron arrangement for aluminum?

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2,8,3 because Aluminium has the Atomic Number 13

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Why Are aquifers important to our freshwater supply? 5TH GRADE ANSWER c:

ANEK [815]

Explanation:

Aquifers are porous and permeable formations that stores ground water. The ground water system is made up of mostly fresh water.

An aquifer acts as a reserve for ground water in the environment.
By passing through different formations, water that recharges them are purified.
This makes them fresh and mostly free from salt intrusion

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4 0

3 years ago

Consider the following balanced equation:

algol [13]

Moles of PF₃ : 4

<h3>Further explanation</h3>

A reaction coefficient is a number in the chemical formula of a substance involved in the reaction equation. The reaction coefficient is useful for equalizing reagents and products.

Reaction

$\tt P_4(s)+6F_2(g)\rightarrow 4PF_3(g)$

1.25 moles of P₄(s) is reacted with 6 moles of F₂(g)

Limiting reactant : the smallest ratio (mol divide by coefficient)

P₄ : F₂ =

$\tt \dfrac{1.25}{1}\div \dfrac{6}{6}=1.25\div 1\rightarrow F_2~limiting~reactant(smallest~ratio)$

mol PF₃ based on mol of limiting reactant(F₂), so mol PF₃ :

$\tt \dfrac{4}{6}\times 6~moles=4~moles$

8 0

3 years ago