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Orlov [11]
2 years ago
11

What is the formula of Iron oxide​

Chemistry
2 answers:
Fed [463]2 years ago
8 0
Fe2O3
That’s the formula for iron oxide
BaLLatris [955]2 years ago
8 0

is an inorganic compound with the formula fe2o3

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a scientists finds an organism that cannot move. it has many cells, produces spores, and gets food from its environment. in whic
lord [1]

The correct answer is : The Organism belongs in Kingdom Fungi


The explanation:


1) because Fungi can be multicellular


2) most of them cannot move.


3) They can get food by releasing digestive juices into their environment.

3 0
3 years ago
What characteristics do the elements in a group share? In a period, share?
Katyanochek1 [597]

Answer:

The elements in same period have same principle quantum number or energy shell.

The elements in same group shows similar chemical and properties.

Explanation:

Inn group:

The elements in same group i.e present in vertical column shows similar chemical properties.

The elements in same group having same number of valance electrons. while in chemical reaction bonds are break and formed and valance electrons are involved. That's why elements in same group having same number of valance electrons and shows similar chemical properties.

In period:

While as we move from left to right the number of valance electron increase by one in every element. But the electron is added in same shell which means that their physical and chemical properties are different but principal quantum number is same.

3 0
3 years ago
When copper metal is added to nitric acid, the following reaction takes place
zlopas [31]

Answer:

The volume of NO₂ gas collected over water at 25.0 °C is 1.68 Liters.

Explanation:

Cu (s) + 4 HNO_3 (aq) \rightarrow Cu(NO_3)_2 (aq) + 2 H_2O (l) + 2 NO_2 (g)

Moles of copper = \frac{2.01 g}{63.55 g/mol}=0.03163 mol

According to reaction, 1 mol of copper gives 2 moles of nitrogen dioxide gas.

Then 0.03613 moles of copper will give:

\frac{2}{1}\times 0.03163 mol=0.06326 mol of nitrogen dioxide gas

Moles of nitrogen dioxide gas = n = 0.06326 mol

Pressure of the gas = P

P = Total pressure - vapor pressure of water

P = 726 mmHg - 23.8 mmHg = 702.2 mmHg

P = 0.924 atm (1 atm = 760 mmHg)

Temperature of the gas = T = 25.0°C =298.15 K

Volume of the gas = V

PV=nRT

V=\frac{0.06326 mol\times 0.0821 atm L/mol K\times 298.15 K}{0.924 atm}

V = 1.68 L

The volume of NO₂ gas collected over water at 25.0 °C is 1.68 Liters.

3 0
3 years ago
A wetland being drained so a housing development can be built is an example of ____________.
Reil [10]

Answer:

a now give me the points

Explanation:

5 0
2 years ago
Is lichen growing on rocks chemical or mechanical weathering?
Alik [6]

Answer: mechanical

Explanation:

7 0
3 years ago
Read 2 more answers
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