Answer:
A convex lens bends light rays inward, which results in the object being perceived as larger or closer.
Explanation:
Answer:
no lo sé chico ve a morir en un agujero
Explanation:
Since the ethanol has a density of 0.800 g/mL, the mass of the ethanol is 180 grams.
<u>Given the following data:</u>
- Volume of ethanol = 225 mL
- Density of lead ball = 0.800 g/mL.
To find the mass of the ethanol;
Density can be defined as mass all over the volume of an object.
Mathematically, the density of a substance is given by the formula;
Making mass the subject of formula, we have;
Substituting the given parameters into the formula, we have;
<em>Mass of ethanol </em><em>=</em><em> 180 grams.</em>
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Cd + 2HCl → CdCl₂ + H₂, 2ZnS + 3O₂ → 2ZnO + 2SO₂ and CH₄ + 2O₂ → CO₂ + 2H₂O reactions are redox reaction.
<h3>What is redox reaction?</h3>
Redox reactions are those reactions in which oxidation and reduction process takes place simultaneously.
Above balanced equation is a redox reaction as in this reaction oxidation of Cadmium takes place from 0 to+2 state and reduction of hydrogen takes place from +1 to 0 state.
- CuCl₂ + Na₂S → 2NaCl + CuS
- CaCO₃ → CaO + CO₂
Above two balanced reaction are not the redox reaction as their is no oxidation or reduction takes place.
Above balanced equation is a redox reaction as in this reaction oxidation of sulfur takes place from -2 to+4 state and reduction of oxygen takes place from 0 to -2 state.
Above balanced equation is a redox reaction as in this reaction oxidation of carbon takes place from -4 to+4 state and reduction of oxygen takes place from 0 to -2 state.
Hence, Cd + 2HCl → CdCl₂ + H₂, 2ZnS + 3O₂ → 2ZnO + 2SO₂ and CH₄ + 2O₂ → CO₂ + 2H₂O reactions are redox reaction
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brainly.com/question/26263317
Answer:
The specific heat capacity of sand is less than the water.
Explanation:
On hot days, the beach sand gets hot than water because the specific heat capacity of water is higher than the sand.
Specific heat capacity:
"The amount of heat require to raise the temperature of one gram of substance by one degree"
it mean that water require more heat to raise the temperature while sand get hot by absorbing small amount of temperature.
The specific heat capacity of water is 4200 J Kg-1 °C-1
The specific heat capacity of sand is 840 J Kg-1 °C-1
Equation:
C = Q/ ΔT
Here C is the heat capacity, ΔT is the change of temperature of substance by absorbing heat and Q is the energy in joule.
Another equation:
Q = C× m × ΔT
m is the mass of given substance. The specific heat capacity of water very high than other substances that make a water compound in term of temperature.