Answer:
2.5×10⁶ s
Explanation:
From the question given above, the following data were obtained:
Rate constant (K) = 2.8×10¯⁷ s¯¹
Half-life (t½) =?
The half-life of a first order reaction is given by:
Half-life (t½) = 0.693 / Rate constant (K)
t½ = 0.693 / K
With the above formula, we can obtain the half-life of the reaction as follow:
Rate constant (K) = 2.8×10¯⁷ s¯¹
Half-life (t½) =?
t½ = 0.693 / K
t½ = 0.693 / 2.8×10¯⁷
t½ = 2.5×10⁶ s
Therefore, the half-life of the reaction is 2.5×10⁶ s
The given question tells you that a certain piece of wire has a mass = 2.0 g per meter
That means that if you consider a piece of wire that is 1 m in length, its mass will be equal to 2.00 g .
According to question,
Now, you know that
1 m = 100 cm
Mass of 2.00 g of copper will correspond to a wire that is a 100 cm long.
This implies that 0.28 gof copper will correspond to a wire that is
0.28 g * 100 cm / 2.0 g = 14 cm long
Hence, 14 cm of the wire would be needed to provide 0.28 g of copper.
Properties of Copper :
High conductivity and ductility.
Non magnetic.
To know more about Copper here:
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Answer:
Iconic bond or covalent bond
Explanation:
Answer:
Explanation:
Chemical compounds are substances that contain two or more elements that are chemically bonded together.
Here are 50 chemical compounds:
- Hydrogen peroxide
- Fructose
- Sulfur hexafluoride
- Glucose
- Sulfuric acid
- Calcium nitrate
- Nitrous oxide
- Calcium sulfate
- Ammonia
- Hydrochloric acid
- Potassium nitrate
- Potassium nitrite
- Sucrose
- Methane
- Carbon dioxide
- Dihydrogen oxide
- Putrescine
- Chloroform
- Ethene
- Hydrazine
- Sodium bicarbonate
- Sodium chloride
- Acetate
- Magnesium sulfate
- Urethane
- Butyne
- Nicotine
- Maltose
- Propene
- Tartaric acid
- Nitrogen dioxide
- Butane
- Butene
- Propane
- Pentane
- Hexane
- Benzene
- Isobutane
- Ovalene
- Coronene
- Pyrene
- Chrysene
- Napthalene
- Acetic acid
- Barium iodide
- Aluminium oxide
- Aluminium fluoride
- Styrene
- Toluene
- Vinyl chloride
Answer:
Radiation is the emission of electromagnetic waves from all matter that has a temperature greater than absolute zero. In other words the heat of the energy it radiates in infrared spectrum.
