Find the mass in grams of 2.65 x 10^24 molecules of cl2
Answers
Mole measure the number of elementary entities of a given substance that are present in a given sample. Therefore, 311.98 grams is the mass of 2.65 x 10²⁴ molecules of Cl .
What is mole?
The SI unit of amount of substance in chemistry is mole. The mole is used to measure the quantity or amount of substance. We know one mole of any element contains 6.022×10²³ atoms which is also called Avogadro number.
Mathematically, the formula for mole can be given as
mole =given mass ÷ molar mass
Moles of Cl = 2.65 x 10²⁴ / 6.02 x 10²³
= 4.4 moles.
Mass of Cl2 in grams = molar mass of Cl2 x moles of Cl2
= 70.906 x 4.4
= 311.98 grams.
Therefore, 311.98 grams is the mass of 2.65 x 10²⁴ molecules of Cl .
To know more about mole, here:
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Mass of Cl2 in grams = molar mass of Cl2 x moles of Cl2
= 70.906 x 4.4
= 311.98 grams.
Hope this helps!
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Answers
Answer:
116
Explanation:
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B. stomach
C. small intestine
D. large intestine
Answers
Answer:
The correct answer is A).Liver
Explanation: The liver receives digested food components and stores the glucose to be released into the bloodstream for future use, NOT the small intestine or large intestine
I AM 100% CONFIDENT WITH THIS ANSWER TRUST ME!!!
I know it is NOT small intestine, so Large Intestine.
Answers
The answer would be:
Pure substance: specifically a compound
Pure substances can be categorized into compounds and elements. A compound is a pure substance that cannot be broken down physically, but it can be broken down through chemical means. It is this property that differentiates it from mixtures. Mixtures can be broken down by physical and/or chemical means.
Elements on the other hand, cannot be broken down at all because it is in its simplest form and is also considered as a pure substance.
Answer:
Pure substance
Explanation:
Matter can be broadly classified into two categories: Pure substances and Mixtures (homogenous and heterogenous mixtures).
The simplest form of a pure substance is an element which cannot be broken down any further. When two or more elements combine, they form a compound which is also a pure substance. Thus, pure substances are systems that are either composed of a single type of element or a single type of molecule.
For example salt (NaCl) is a compound which is composed of elements: sodium (Na) and chlorine (Cl). These elements (in fact ions, Na+ and Cl-) are held together by a chemical bond. Thus, a pure substance like NaCl can be broken down into its elements through chemical means.
The unknown substance in the given question can therefore be classified as a pure substance
Na2CO3 + Ca(OH)2 --> 2NaOH + CaCO3
Now I know how to do equations like this, just a bit confused on how to use my conversion factors.
Do I need to use the 3.0 Molarity in this equation or can I just use Molar Volume of a gas (22.4L/1 mole)?
Answers
You would have to use the molarity of calcium hydroxide to find the moles of calcium hydroxide. Once you have moles, just convert using mole:mole ratio and find the grams of sodium hydroxide.
Answers
The answer is electrolyte.
That is electrolyte is the type of minerals that is associated with maintaining water balance, osmotic equilibrium, acid-base balance and intracellular/extracellular differential.
Sodium, potassium and chlorides are the macrominerals that are known as the electrolytes, that are very important for the function says maintaining water balance, osmotic equilibrium, acid-base balance and intracellular/extracellular differential .
Answers
Answer:
Independent Variable = Years
Dependent Variable = Number of Mobiles phone owners
Explanation:
Independent variables are plotted on x-axis and the dependent variables are plotted on y-axis.
In given graph the "Years" belong to x-axis hence, years are the independent variables.
Also, "Number of Mobile phones owners" belong to y-axis hence, this number is the dependent variable.