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enyata [817]
3 years ago
6

In the compound fe203 irons oxidization number is + 3 + Oxygen's oxidation number is

Physics
1 answer:
PtichkaEL [24]3 years ago
8 0

Answer:

-2

Explanation:

Since its a compound, it's charge is 0.

So, there are 2 Fe and 3 Oxygen,

let x = oxidation number of oxygen

2(+3) + 3x =0

x =-2

Side note : even if the oxidation number is positive, make sure to put the positive sign like how you would in numbers

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The density of silver is 10.5 g/cm3g/cm3. part a what is this value in kilograms per cubic meter?
OLEGan [10]

The correct answer for the density of silver in kilograms per cubic meter is 10500 kg/m^3.

Silver has a density of 10.8103 kg/m3.Pure silver is nearly white, lustrous, soft, very ductile, and malleable, and it is an excellent heat and electricity conductor. Although it is not a chemically active metal, it is attacked by nitric acid (which forms nitrate) and hot concentrated sulfuric acid.

Atomic weight: 107.87 g.mol-1

At 20°C, the density is 10.5 g.cm-3.

962 °C melting point

2212 °C is the boiling point.

Silver has long been used in the manufacture of coins, ornaments, and jewelry due to its relative scarcity, brilliant white color, malleability, ductility, and resistance to atmospheric oxidation. Silver, along with gold and the platinum-group metals, is one of the so-called precious metals.

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brainly.com/question/11025956

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5 0
1 year ago
Since our number system is on a base-10 notation, we do not need to learn scientific notation.
Tom [10]
Pretty sure its false
3 0
3 years ago
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How did conflict between countries affect trade along the Silk Road?
Eva8 [605]

Answer:

A: It decreased trade because soldiers no longer protected the oases.

I took it on E2020. I hope I've helped. If you need further explanation, please comment below.  

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3 years ago
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Sully uses a battery and a coil of wire to create an electromagnet. Using the same materials, if he wants to increase the streng
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Hope this helps!
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4 years ago
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A toy rocket that weights 10 N blasts straight up from ground level with an initial kinetic energy of 40J. at the exact top of i
marishachu [46]

Answer:

14 m

Explanation:

Applying,

P.E = WH............ Equation 1

Where P.E = potential energy at the highest vertical height, W = weight of the toy rocket, H = Vertical height.

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Therefore,

Mechanical energy(M.E) = Potential Energy(P.E)

make H the subject of the equation

H = P.E/W......... Equation 2

From the question,

Given: W = 10 N,  P.E = 140 J

Substitute these values in equation 2

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8 0
3 years ago
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