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How many moles of bromine gas are in 37.7 grams?
To determine the number of moles of bromine gas in 37.7 grams, you need to divide the given mass by the molar mass of bromine. The molar mass of bromine is approximately 79.904 g/mol. So, 37.7 grams of bromine is equal to 0.471 moles (37.7 g ÷ 79.904 g/mol).
What is the atomic number also equal to?
The atomic number is equal to the protons and electrons of an element.
How many moles is 2.17x10 representative particles of bromine?
Since one mole is equal to 6.022x10^23, there are .36 moles in 2.17x10 representative particles of bromine. A mole is a measure used to make atomic calculations for density.
What is the mass of bromine in 50.0g potassium bromide?
The chemical formula of potassium bromide is KBr, showing that each formula unit contains equal numbers of potassium and bromine atoms. The gram atomic masses of potassium and bromine are 39.0983 and 70.904 respectively. Therefore, the mass fraction of bromine in KBr is 70.904/(70.904 + 39.0983) or about 0.644568. 50.0 g of potassium bromide therefore contains 32.2 g of bromine, to the justified number of significant digits.
How many moles are in 1.204x1024 atoms of Calcium?
The formula unit for calcium is a single atom. Therefore, the number of moles may be found by dividing the given number of atoms by Avogadro's number, or 1.999 moles.
How many moles of bromine atoms are in 2.60x102 grams of bromine?
2,60x102 grams of bromine (Br) is equal to 1,627 moles Br2.
What is the oxidation number of CBr4?
The oxidation number of carbon in CBr4 is +4 because bromine is more electronegative than carbon and is assigned an oxidation number of -1 each. Since there are four bromine atoms in CBr4, the total oxidation number of bromine is -4. The sum of the oxidation numbers in a compound must equal zero, so the carbon must have an oxidation number of +4 to balance the negative oxidation numbers from the bromine atoms.
One mole is equal to how many grams?
Its avogadros number which is 6.02 X 10^23 g/mol
What is the charge on a bromine atom that contains 36e?
A bromine atom with 36 electrons is neutral, as the number of protons (which is equal to the atomic number, 35 for bromine) is balanced by the number of electrons. The charge on a neutral bromine atom is 0.
How many protrons does bromine have?
The atomic number of an element is equal to the number of protons in a single atom. Therefore, Bromine has 35 protons.
Does the number of iron atoms in the reactants equal the number of iron atoms in the products?
no
What is the oxidation number of Al in Al2Br6?
The oxidation number of Al in Al2Br6 is +3. Each bromine atom has an oxidation number of -1, and since the compound is neutral, the sum of the oxidation numbers must equal zero. Hence, each Al atom must have an oxidation number of +3 to balance the -6 from the bromine atoms.
What is the oxidation number of bromine in KBr?
The oxidation number of bromine in KBr is -1. In ionic compounds, the oxidation number of the cation (K+) is always equal to its charge, which is +1. Therefore, the oxidation number of bromine must be -1 to balance the overall charge of the compound.
Do hydrogen and atoms have an equal number of electrons?
No. Neutral atoms of each element, including hydrogen, have a unique number of electrons, which is equal to the number of protons in their nuclei. The number of protons is the element's atomic number on the periodic table.
Is the number of electrons equal to the number of protons in the atoms?
Yes :-)
Is the atomic number the number of atoms it has?
The atomic number is equal to the number of protons.
When atoms are at rest what do they have an equal number of?
protons and electrons protons and electrons
