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kvasek [131]
3 years ago
14

What is the empirical formula for P4O10?

Chemistry
2 answers:
Sphinxa [80]3 years ago
8 0

Answer: P2O5

Explanation: You divide both subscripts by 2 to get the empirical formula.

bija089 [108]3 years ago
3 0

Answer:

Formula of P4O10 is P2O5.

Explanation:

WE GET IT BY DIVIDING BOTH SUBSCRIPTS BY 2.

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Select the correct answer. Based on the reactivities of the elements involved, which reaction will form products that are more s
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Answer: The correct answer is option B.

Explanation: Reactivity of elements is defined as the tendency to loose or gain electrons.

These reactions are a type of single displacement reactions. A single displacement reaction is a type of reaction in which an element displaces another element in a chemical reaction. These are studied with the help of reactivity series.

The element which lies above in the reactivity series can easily displace the element which lies below in the reactivity series.

Option A: This reaction will not yield a stable product because Zinc lies below Aluminium in the reactivity series.

AlBr_3+Zn\rightarrow \text{No reaction}

Option B: This reaction will yield a stable product because Sodium lies above Calcium in the reactivity series.

CaBr_2+2Na\rightarrow 2NaBr+Ca

Option C: This reaction will not yield a stable product because Hydrogen lies below Magnesium in the reactivity series.

MgBr_2+H_2\rightarrow \text{No reaction}

Option D: This reaction will not yield a stable product because Calcium lies below Barium in the reactivity series.

BaBr_2+Ca\rightarrow \text{No reaction}

Option E: This reaction will not yield a stable product because barium lies below Lithium in the reactivity series.

2LiBr+Ba\rightarrow \text{No reaction}

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3 years ago
A blood pressure of 145 mm Hg is considered to be high and is generally a sign of hypertension. Determine what this pressure is
Illusion [34]

Answer:

19.3317 kilopascals

Explanation:

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3 years ago
If the volume occupied by the air in a bicycle pump is 525 cm3, and the pressure changes from 73.2 kPa to 122.5 k.Pa as the pist
Musya8 [376]

Answer:

V_2=313.71\ cm^3

Explanation:

Given that,

Initial volume, V_1=525\ cm^3

The pressure changes from 73.2 kPa to 122.5 k.Pa.

We need to find the new volume occupied by the air. Let it is V₂. It can be calculated using Boyle's law such that,

P_1V_1=P_2V_2\\\\V_2=\dfrac{P_1V_1}{P_2}\\\\V_2=\dfrac{73.2\times 525}{122.5}\\\\V_2=313.71\ cm^3

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2 years ago
What is the medical term for ringing, buzzing, or hissing in the ears?
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Tinnitus is the ringing in ears or buzzing and hissing
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3 years ago
What is the mass, in grams, of solute in 255mL of a 0.0525M solution of KMnO4 (MM =
Murljashka [212]

Answer:

Mass = 2.12 g

Explanation:

Given data:

Volume of KMnO₄ = 255 mL (255/1000 = 0.255 L)

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First of all we will calculate the number of moles.

<em>Molarity = number of moles of solute / volume in litter</em>

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