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Amiraneli [1.4K]
3 years ago
14

Is burning a wooden match chemical or physical change

Chemistry
2 answers:
qwelly [4]3 years ago
8 0
Chemical. burning is a chemical change
fiasKO [112]3 years ago
8 0
A burning wooden match is a physcial change.
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Read the quote: "No tears in the writer, no tears in the reader." Which best explains the meaning of this quote?​
liubo4ka [24]

Answer:

From personal experience

Explanation:

If is not felt by the writer, the reader will not feel it either!

8 0
2 years ago
When the pressure that a gas exerts on a sealed container changes from 22.5 psi to ? psi, the temperature changes from 110 degre
natta225 [31]
Using Gay-Lussac's Law, pressure is proportional to (absolute) temperature in Kelvin. We first convert the temperature values to Kelvin: 110 C = 383.15 K, while 65 C = 338.15 K.
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8 0
3 years ago
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What is the balanced equation and type of reaction for: <br> Copper metal+aqueous silver nitrate
Gnesinka [82]

Answer:

Cu(s) + 2AgNO3(aq)→Cu(NO3)2(aq)+2Ag(s)

This chemical equation means:

One mole of solid copper plus two moles of aqueous silver nitrate produce one mole of copper(II) nitrate plus two moles of solid silver.

This is a single replacement reaction in which the metal copper replaces the metal silver.

3 0
2 years ago
What is the correct formula for combining Mg2+ and Br1+
True [87]

Answer: The correct formula is MgBr_2

Explanation:

For formation of a neutral ionic compound, the charges on cation and anion must be balanced. The cation is formed by loss of electrons by metals and anions are formed by gain of electrons by non metals.  

Here magnesium is having an oxidation state of +2 called as Mg^{2+} cation and bromine Br^{-} is an anion with oxidation state of -1. Thus they combine and their oxidation states are exchanged and written in simplest whole number ratios to give neutral MgBr_2.

The cations and anions being oppositely charged attract each other through strong coloumbic forces and form an ionic bond.

6 0
2 years ago
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