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Kitty [74]
3 years ago
9

Please help me asap!!!!!!!!

Mathematics
2 answers:
seraphim [82]3 years ago
5 0
Both of them don’t follow the law of conservation of mass
lesantik [10]3 years ago
4 0
12.) This does not follow the rule of conservation because on the reactant side there is one Na and two Cl while the product side only has one Na and Cl. They are not equal and do not have the same number of atoms for the different elements. In the law of conservation matter cannot be created or destroyed and this does not follow the law.

13.) 2Na + Cl2 —> 2NaCl

Put a 2 in front of Na and a 2 in front of NaCl
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What is 34.982 + 45.8 + 3.4298=
Gre4nikov [31]

Answer:

84.2118

Step-by-step explanation:

34.982 + 45.8 + 3.4298=84.2118

6 0
2 years ago
Read 2 more answers
Find the area of abc. round your answer to the nearest tenth. b=87, a = 10.1, c = 9.8
Advocard [28]
The area of the triangle can be calculated through the equation,
             A = sqrt ((s)(s - a)(s - b)(s - c))
where A is area, s is the semiperimeter ((a + b + c)/2), a, b, and c are the sides given above.

The presented equation above is the Heron's formula.

Substituting the known values,
             s = (8.7 + 10.1 + 9.8) / 2
              s = 14.3

    A = sqrt ((14.3)(14.3 - 8.7)(14.3 - 10.1)(14.3 - 9.8))
           <em>A = 38.9 units squared

</em>
Thus, the answer to this item is not among the choices. <em>
</em>
8 0
3 years ago
Find the value of the trigonometric ratio.
olchik [2.2K]

Answer:

30 / 34 and 15/17 simplified.

Step-by-step explanation:

cos = adjacent / hypotenuse

adjacent is the (base) which is 30 and hypotenuse is the longest side which is 34

7 0
2 years ago
How much do you need to subtract from 87/10 to make 8
strojnjashka [21]

Answer:

i feel like you need 76 from the 87

Step-by-step explanation:

3 0
3 years ago
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the area of the curved surface of a solid cylinder is equal to 2/3 of the total area of the same cylinder . If the total surface
zheka24 [161]

Answer:

Sa = 36 circumference per meter square

This answer is wrong sorry

Will you my friend

7 0
2 years ago
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