Positively charged protons in the nucleus, hope this helps.
Answer:
The temperature at which the vapor pressure of a liquid is just equal to the external ... The conversion of a liquid to a gas below the boiling point is called ... equilibrium temperature of the mixture was 36.0 °C. What is the specific heat (J/ g°C) of the metal
Explanation:
The quality of being hot; high temperature.
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The rate of reaction may be determined using the concentration-time graph of either a reactant or product. The slope of the graph helps in determining the rate of reaction. If the rate of reaction increases, the magnitude of the slope of the graph will increase. This indicates that more reactant is being consumed per unit time, or, in the case of the product, more product is being produced per unit time.
The energy required to melt 20 kg of ice at 0°C is 6.68 kJ.
The enthalpy change for melting of an ice is called the enthalpy of fusion. Its value is 6.02 kJ/mol. This means for every mole of ice we must apply 6.02 kJ of heat for melting. The calculation of heat is done by following equation.
q = n×ΔH
- q is heat
- n is number of moles
in this problem we need to calculate heat needed to melt 20grams of ice at 0°C .
Calculation of moles of water,
Number of moles of water (n) = given mass/ molar mass = 20g/18.02g/mol
Number of moles of water (n) = 1.109 mole
heat or energy required = q = n×ΔH = 1.109 mole× 6.02 kJ/mol = 6.68 kJ
learn about energy,
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