Answer:
22 students
Explanation:
i just answered that question on a quiz and its correct lol
Answer:
1. Synthesis
2. Decomposition
3. Single replacement
4. Synthesis
5. Decomposition
6. Synthesis
Explanation:
Kind of a hard picture to look at but let me define each chemical reaction:
Synthesis:
a + b ---> ab In synthesis elements/compounds come together to form new compounds
Decomposition:
ab ---> a + b In decomposition a compound breaks down to form 2 elements/compounds
Single replacement:
a + bc ---> b + ac In a single replacement one element/compound takes the place of another element/compound.
Double replacement
ab + cd ---> ad + bc In a double replacement 2 compounds exchange different elements/compounds.
Now, let's go through the assignment
1. P + O2 --> P4O10 This is a synthesis reaction because the two elements (P and O) came together to form one compound.
2. HgO ---> Hg + O2 This is a decomposition reaction because HgO broke into separate elements Hg and O.
3. Cl2 + NaBr ---> NaCl + Br2 This is a single replacement reaction because chlorine (Cl) replaced the spot of bromine (Br) to bond with sodium (Na).
4. Mg + O2 ---> MgO This is a synthesis reaction because two elements (Mg and O) came together to form one compound.
5. Al2O3 ---> Al + O2 This is a decomposition reactions because Al2O3 broke into separate elements Al and O.
6. H2 + N2 ---> NH3 This is a synthesis reaction because two elements (H and N) came together to form one compound.
<em>I hope this helps!!</em>
<em>- Kay :)</em>
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>
Answer:
The correct answer will be "".
Explanation:
We have:
Moles of solute (Na₂Co₃) =
=
=
Now,
The volume of the solution will be:
⇒
∴
The formula to find the concentration will be:
⇒
On substituting the given values, we get
⇒
⇒