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What is the percent by mass of carbon in C3H8?
Well, isn't that just a happy little question! To find the percent by mass of carbon in C3H8, you first need to calculate the molar mass of carbon in C3H8, which is 3 times the molar mass of carbon. Then, you divide the molar mass of carbon by the molar mass of C3H8 and multiply by 100 to get the percent by mass. Just remember, there are no mistakes in chemistry, only happy accidents!
What are the 5 main gases that make up the earth's atmosphere?
Nitrogen, oxygen, and argon make up practically all of the air (99.96%). Carbon dioxide and neon are both trace gaces: CO2 about 400 parts per million and neon about 18 parts per million by volume. Water vapor suspended in the air can amount for up to 5% of its volume (in the most humid climates).
What do values on the Richter scale express?
The values on the Richter scale express the magnitude of an earthquake, which is a measure of the energy released at the earthquake's source. The scale is logarithmic, meaning that each whole number increase represents a tenfold increase in the amplitude of seismic waves and approximately 31 times more energy release.
What is the formula for pHO?
The formula for pH is -log[H+] where [H+] represents the concentration of hydrogen ions in a solution. pH measures the acidity or basicity of a solution on a scale from 0 to 14, with values less than 7 indicating acidity, 7 being neutral, and values greater than 7 indicating basicity.
Which molecule contributes to the greenhouse effect?
CO2 Methane
Which of the following values represents the molar mass of methane?
The molar mass of methane (CH4) is approximately 16 g/mol.
What is the largest posistive number that can be represented using 1 byte?
If the byte represents a signed number, values commonly go from minus 128 to plus 127. If the byte represents an unsigned number, values commonly go from 0 to 255.
What do z mean in a algebra problem?
It is simply a variable - it represents a number which can take different values.
What are the values of 6 digit number?
A six-digit number can range from 100,000 to 999,999. The value of a six-digit number is determined by the position of each digit, where the leftmost digit represents the hundred-thousands place and the rightmost represents the units place. Each digit contributes to the overall value based on its position, with values multiplied by powers of ten. For example, in the number 234,567, the '2' represents 200,000, '3' represents 30,000, and so on.
Carbon resistors are not available in market of each number of resistance why?
carbon resistors of standard values are manufactured because other values can be obtained by series and parallel combination of standard values. Moreover even standard values do not offer exact Resistance's will have tolerance
What is the expanded form of 2.532?
The expanded form of 2.532 is 2 + 0.5 + 0.03 + 0.002. This breaks down the number into its individual place values: 2 represents the whole number part, 0.5 represents the tenths, 0.03 represents the hundredths, and 0.002 represents the thousandths.
What does the Fourth Report of the IPCC say about levels of carbon dioxide methane and nitrous oxide in the atmosphere?
The Fourth Report of the IPCC (The United Nations' Intergovernmental Panel on Climate Change), Climate Change 2007, said:"Carbon dioxide, methane, and nitrous oxide are all long-lived greenhouse gases.andCarbon dioxide, methane, and nitrous oxide have increased markedly as a result of human activities since 1750 and now far exceed pre-industrial values."
What is the oxidation number of carbon in CH3OH?
The oxidation number of carbon in CH3OH is -2. This is because hydrogen has an oxidation number of +1 and oxygen has an oxidation number of -2. By assigning these values to the other atoms in the molecule, we can determine that carbon must have an oxidation number of -2 to balance the overall charge of the molecule.
What value of secondary quantum number l?
The secondary quantum number, l, represents the shape of an orbital and can have values ranging from 0 to n-1, where n is the principal quantum number. Therefore, l can have values from 0 to (n-1).
What is 2.45 in expanded form?
The number 2.45 in expanded form can be expressed as 2 + 0.4 + 0.05. This breaks down the whole number and each decimal place into its individual values. Here, 2 represents the whole number part, 0.4 represents four-tenths, and 0.05 represents five-hundredths.
How does the zero make the decimal system possible?
The zero enables the use of place values which are fundamental to the decimal system. It allows you to differentiate between 109 and 19: the 1 in the first number represents the number of hundreds whereas in the second number the same digit represents the number of tens.
What is LXXXIX in numbers?
LXXXIX is the Roman numeral for the number 89. In Roman numerals, L represents 50, XXX represents 30, and IX represents 9. When you add these values together (50 + 30 + 9), you get 89.
