The number two has many properties in mathematics.[1]<span> An </span>integer<span> is called </span>even<span> if it is divisible by 2. For integers written in a numeral system based on an even number, such as </span>decimal<span> and </span>hexadecimal<span>, divisibility by 2 is easily tested by merely looking at the last digit. If it is even, then the whole number is even. In particular, when written in the decimal system, all multiples of 2 will end in 0, 2, 4, 6, or 8. In numeral systems based on an odd number, divisibility by 2 can be tested by having a </span>digital root that is even.3 is:<span><span>a rough approximation of π (3.1415...) and a very rough approximation of e (2.71828..) when doing quick estimates.</span><span>the first odd prime number,[2] and the second smallest prime.</span><span>the first Fermat prime (<span>2<span>2n</span> + 1</span>).</span><span>the first Mersenne prime (<span>2n − 1</span>).</span>the only number that is both a Fermat prime and a Mersenne prime.<span>the first lucky prime.</span><span>the first super-prime.</span><span>the first unique prime due to the properties of its reciprocal.</span><span>the second Sophie Germain prime.</span>the second Mersenne prime exponent.<span>the second factorial prime (2! + 1).</span><span>the second Lucas prime.</span><span>the second Stern prime.[3]</span><span>the second triangular number and it is the only prime triangular number.</span><span>the third Heegner number.[4]</span><span>both the zeroth and third Perrin numbers in the Perrin sequence.[5]</span><span>the fourth Fibonacci number.</span><span>the fourth open meandric number.</span><span>the aliquot sum of 4.</span><span>the smallest number of sides that a simple (non-self-intersecting) polygon can have.</span><span>the only prime which is one less than a perfect square. Any other number which is <span>n2 − 1</span> for some integer n is not prime, since it is <span>(n − 1)(n + 1)</span>. This is true for 3 as well (with n = 2), but in this case the smaller factor is 1. If n is greater than 2, both <span>n − 1</span> and <span>n + 1</span> are greater than 1 so their product is not prime.</span><span>the number of non-collinear points needed to determine a plane and a circle.</span></span>
11 LIMITING react this is the answer
Tin is an element called Stannum and has the symbol Sn. Molar mass is the mass of 1 mol of a compound, 1 mol of any substance is made of 6.022 x 10²³ units, these units could be atoms making up an element or molecules making up a compound.
While the number of atoms making up 1 mol is the same for any element, the weight of 1 mol of substance varies from one another.
In tin(Sn) molar mass - 118.71 g/mol
In 118.71 g - there's 1 mol of tin
therefore in 37.6 g of tin - 1 x 37.6 / 118.71 = 0.31 mol
In 37.6 g of tin, there's 0.31 mol
Answer:
The student is now told that the four solids, in no particular order, are barium chloride (BaCl2), sugar (C6H12O6), butanoic acid (C3H7COOH), and sodium bromide (NaBr). Assuming that conductivity is correlated to the number of ions in solution, rank the four substances based on how well a 0.20 M solution in water will conduct electricity. Rank from most conductive to least conductive.
Explanation:
The given substances are:
barium chloride(BaCl2),
glucose(C6H12O6),
butanoic acid (C3H7COOH) which is a weak acid,
sodium bromide (NaBr).
The conductivity of a solution is proportional to the number of ions present in a particular solution.
1mol. of BaCl2 in water produces a total three mol. of ions.
Gluocse is a covalent compound and it does not dissociate into ions in water.
So, it does not conduct electricity.
Butanoic acid is a weak acid. But due to the release of H+ ions it can conduct a very less amount of electricity.
NaBr is an ionic compound and in 1mol. of NaBr in water gives two mol. of ions.
NaBr (aq) -> Na+ (aq) + Br- (aq)
Hence, the order of conductivity among the given substances in aqueous solution is:
BaCl2 > NaBr > butanoic acid > glucose
If 162.35 g aluminum hydroxide are dissolved in 6750 mL of solution, the concentration of the solution is 0.308M
<h3>How to calculate concentration?</h3>
The concentration of a solution can be calculated using the following formula:
Molarity = no of moles ÷ volume (L)
However, the number of moles in 162.35g of Al(OH)3 must be calculated as follows:
Molar mass of Al(OH)3 = 78g/mol
no of moles = 162.35g ÷ 78mol
no of moles = 2.08mol
Molarity = 2.08mol ÷ 6.75L
Molarity = 0.308M
Therefore, if 162.35 g aluminum hydroxide are dissolved in 6750 mL of solution, the concentration of the solution is 0.308M.
Learn more about molarity at: brainly.com/question/2817451