Answer:
Cannot withstand very high temperature as all plastics melt down very soon as compared to metals
Answer:
I think it may be C because Newton's second law of motion states that the acceleration of an object equals the net force acting on the object divided by the object's mass.
There's also a possibility of B as well because the Law of force and acceleration but im not sure
Answer : A single carbon atom can form a maximum of <u>Four (4)</u> covalent bond(s).
Explanation : A covalent bond, also called a molecular bond, is a chemical bond that involves the sharing of electron pairs between atoms. These electron pairs are known as shared pairs or bonding pairs.
Formation of covalent bond depends on the number of valence electrons. Electronic configuration of Carbon (C) is :
Valence electronic configuration of C is :
Carbon have four valence electron that means Carbon can form maximum of four covalent bonds.
For example : In methane (CH4) Cabon can share four electrons with four Hydrogen atoms and can form four covalent bonds with 4 H.
The total heat required to convert the ice to steam is 155,000 J.
The given parameters:
- <em>Mass of the ice, m = 50 g</em>
- <em>Initial temperature of the ice, t = -10 ⁰C</em>
- <em>Final temperature of the ice, T = 0⁰C, 100⁰C and 120⁰C</em>
- <em>Specific heat capacity of water = 4.184 J/g⁰C</em>
- <em>Heat of fusion of ice, = 333.55 J/g</em>
- <em>Heat of vaporization, = 2,230 J/g</em>
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The heat required to raise the temperature to 0⁰C is calculated as;
The heat required to melt the ice is calculated as follows;
The heat raise the temperature to 100⁰C is calculated as;
The heat required to boil the water is calculated as follows;
The heat raise the temperature to 120⁰C is calculated as;
The total heat required is calculated as follows;
Learn more about heat capacity here: brainly.com/question/16559442
Answer:
15.9 mol/kg is the molality for the solution
Explanation:
36.71% means that 36.71 g of solute are contained in 100g of solution
36.71 g → mass of solute
100 g → mass of solution (mass of solute + mass of solvent)
Mass of solvent → 100 g - 36.71 g = 63.29 g
Molality → moles of solute in 1kg of solent
We convert the mass of solute to mol → 36.71 g . 1mol/36.45 g =1.007 mol
We convert the mass of solvent from g to kg → 63.29 g . 1kg/1000g = 0.06329 kg
1.007 mol /0.06329 kg → molality → 15.9 m