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Does silicon dioxide contain carbon?
Silicon dioxide contains only silicon and oxygen - no carbon., The only carbon in a sample labelled " silicon dioxide", would be an impurity or contaminant probably on the surface
Compute the density of an 820g sample of pure silicon occupying a 350cm3 container?
Density is calculated as mass divided by volume. In this case, the mass of the silicon sample is 820g and the volume of the container is 350 cm^3. Therefore, the density of the silicon sample in the container is 820g / 350 cm^3 = 2.34 g/cm^3.
How many grams of silicon would there be in a sample that contained 9.991052 atoms?
1 mol of Si contains 6.02 x 1023 atoms (avogadro constant). Amount of Si = (9.99x1052) / (6.02x1023) = 3.75mol Molecular mass of Si is 28.1. Mass of Si = 3.75 x 28.1 = 105g
What is the concentration of carbon dioxide in this sample?
The concentration of carbon dioxide in a sample can be measured in various units such as parts per million (ppm) or percent (%) depending on the method used for analysis. Common methods include gas chromatography or infrared spectroscopy. It is important to specify which method was used to determine the concentration of carbon dioxide in the sample.
How many Si atoms in 12.5 g sample of silicon?
Silicon is a common metalloid which is a chemical element but it is considered to be tetravalent metalloid which has only 4 available electrons for covalent chemical bonding in its valence region. In the periodic table, Silicon has atomic number 14 with Si symbol. It is good to know that silicon is less reactive that Carbon-14 based on its position in the periodic table which is in the bottom of Carbon.The Standard Atomic Weight for Silicon is 28.0855 grams. The standard is based on the Avogadro's Constant which is 6.02214179 x 1023 mol-1. 1 mol of silicon will contains 6.02214179 x 1023 atoms of silicon. So, how many atoms are present in 12.5 gram of silicon?In 1 mol silicon (28.0855 grams) = 28.0855/28.0855 x 6.02214179 x 1023 = 6.02214179 x 1023 atomsIn 12.5 gram silicon = 12.5/28.0855 x 6.02214179 x 1023 = 2.680271755 x 1023 atomsRead more: How_many_silicon_atoms_are_there_in_1.00_g_of_silicon
Does silicon dioxide contain carbon?
Silicon dioxide contains only silicon and oxygen - no carbon., The only carbon in a sample labelled " silicon dioxide", would be an impurity or contaminant probably on the surface
What is a sample of SiO2?
silicon dioxide
How many atoms does silicon dioxide contain?
Well, honey, silicon dioxide, also known as silica, contains one silicon atom and two oxygen atoms per molecule. So, if we're talking about a single molecule of silicon dioxide, it contains a total of three atoms. But if you're asking about a sample of silicon dioxide, well, that could contain trillions upon trillions of atoms depending on the size of the sample. Hope that clears things up for ya, sugar!
A sample that cannot be separated into two or more substances by physical means is what?
A sample that cannot be separated into two or more substances by physical means is a compound. A compound is made up of 2 or more elements which cannot be broken down by physical means.
How many atoms are in this compound Magnesium?
The question cannot be answered for several reasons. The first is that reduced magnesium is not a compound. Next, you did not provide either a weight or a volume of the sample of magnesium. Without either one or the other, one cannot calculate the number of atoms in the sample.
In a sample of silicon dioxide the mass of oxygen is 60g. what is the mass of silicon present?
To determine the mass of silicon present in silicon dioxide, we need to consider the chemical formula, which is SiO2. This means that for every 1 mole of SiO2, there is 1 mole of silicon and 2 moles of oxygen. Since the molar mass of oxygen is 16 g/mol, the mass of oxygen in 60 g of SiO2 corresponds to 60/16 = 3.75 moles of oxygen. Therefore, the mass of silicon will be 28 g/mol (molar mass of silicon) * 1 = 28 g.
Would a sample of the compound carbon dioxide in your school and another sample of carbon dioxide in Australia have the same composition and properties?
Yes, a sample of carbon dioxide in your school and another sample in Australia would have the same composition since carbon dioxide is made up of one carbon atom and two oxygen atoms. They would exhibit similar properties such as being colorless, odorless, and non-flammable under normal conditions.
How many grams of silicon would there be in a sample that contained 9.99 x 1025 atoms?
To determine the grams of silicon in the sample, you need to know the molar mass of silicon. Since silicon's atomic mass is approximately 28 g/mol, you can calculate the grams of silicon by dividing the number of atoms by Avogadro's number and then multiplying by silicon's molar mass. This calculation would provide you with the amount of silicon in grams in the given sample.
How to find the percent by mass of a compound in a given sample?
To find the percent by mass of a compound in a given sample, you need to divide the mass of the compound by the total mass of the sample and then multiply by 100. This will give you the percentage of the compound in the sample.
How many grams of silicon would there be in a sample that contained 9.99 x 1052 atoms?
To calculate the mass of silicon in the sample, you would first convert the number of atoms to moles using Avogadro's number. Then, you would calculate the mass of silicon in grams using the molar mass of silicon (28.0855 g/mol). The final mass would depend on the number of atoms in the sample.
Does fresh water have magnesium and silicon?
Unless it is "deionized water" fresh water will contain dissolved minerals. Both magnesium and silicon are likely to be in those dissolved minerals, but I cannot state with certainty if a given water sample contains them unless it has been chemically analyzed.
What is the mole ratio of the mercury to oxygen in the sample?
To determine the mole ratio of mercury to oxygen in a sample, you need to know the chemical formula of the compound containing these elements. For example, in mercuric oxide (HgO), the mole ratio of mercury to oxygen is 1:1. If the sample is a different compound, the ratio will vary accordingly based on its chemical formula. Without specific information about the compound, the mole ratio cannot be accurately defined.
