A chemical formula is shown. what do the subscripts in a chemical formula represent? select TWO answers.★ the number of atoms.
★ C = 1, H = 6, O = 5
★ C = 6, H = 6, O = 1
★ the number of molecules.
Answers
Answer:
The subscripts in a chemical formula represent two things:
Explanation:
The subscripts in a chemical formula represent two things:
1. The number of atoms: The subscripts indicate the number of atoms of each element present in a compound. For example, in the chemical formula H2O, the subscript "2" indicates that there are two hydrogen atoms in each water molecule.
2. The number of molecules: The subscripts can also represent the number of molecules in a compound. However, it's important to note that this is not always the case. In most cases, the subscripts in a chemical formula specifically indicate the number of atoms rather than the number of molecules.
To clarify the examples given:
- The statement "★ the number of atoms" is correct. Subscripts in a chemical formula do represent the number of atoms.
- The statements "★ C = 1, H = 6, O = 5" and "★ C = 6, H = 6, O = 1" are not relevant to the question as they do not pertain to the role of subscripts in a chemical formula.
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The addition of heat energy to a system always causes the temperature of that system to increase. True False
Answers
Answer:
Radius of the steel ball is 4.6mm
Explanation:
Hello,
To find the radius of the steel, we'll have to calculate it from it's volume which can be gotten from the density of the material.
Data;
Mass = 3.25g
Density = 7.86g/cm³
Density = mass / volume
Volume = mass / density
Volume = 3.25 / 7.86
Volume = 0.413cm³
Volume of a steel = 4/3πr³
0.413 = 4/3 × π × r³
0.413 = 1.33 × 3.14 × r³
0.413 = 4.1762r³
r³ = 0.413 / 4.1762
r³ = 0.099
Take the cube root of both sides
r = 3√(0.099)
r = 0.46cm
From metrics table
1cm = 10mm
0.46cm = x mm
x = (0.46 × 10)
x = 4.6mm
The radius of the steel ball is 4.6mm
Answers
Answers
Answer:
speed
Explanation:
speed=distance/time
Answers
Answer:
Areas at high latitudes have the coldest water.
Explanation:
Surface water receives its heat from the sun.
I took the test and it was right 100% :)
1, 2, 1, 1
2, 4, 2, 2
0, 2, 0, 0
Answers
Answer:
option b = 1,2,1,1
Explanation:
Chemical equation:
Zn + HCl → ZnCl₂ + H₂
Balanced chemical equation:
Zn + 2HCl → ZnCl₂ + H₂
There are two atoms of hydrogen one atom of zinc and 2 atoms of chlorine on both side of equation.
The common oxidation state of zinc is +2 while tat of chlorine is -1 that's why two chlorine atoms combine with one atom of zinc to accept two electrons.
Zn⁺²Cl₂²⁻ negative and positive charges are equal in magnitude that's why over all compound is neutral.
While two atoms of hydrogen combine with each other through covalent bond by shearing the electrons.
The oxidation state of zinc is increased from 0 to +2 so it gets oxidized while that of chlorine is -1 to -2 is chlorine gets reduced.
Answers
Answer:
The boiling point will decrease to 73.3°C
Explanation:
Atmospheric pressure decreases with elevation and the boiling point of water is directly related to atmospheric pressure, it rapidly drops as elevation increases too, approximately 1°C for every 300 meters.