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2 years ago

HELP! WILL MARK BRAINLIEST

Chemistry

2 answers:

Alex_Xolod [135]2 years ago

8 0

Answer:

Explanation:

A compound is when two different elements join. The model only shows two similar elements, which form a molecule, not a compound.

Grace [21]2 years ago

7 0

A compound is a substance composed of 2 or more chemical elements.
The model does not represent a compound because it shows two atoms of the same element combined. To be a compound the model would need to contain atoms of different element, represented by different colored balls. Therefore, the picture does not represent a compound. :)

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Is the following detente true or false? Paramecia have two nuclei

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3 years ago

You are given an unknown gaseous binary compound (that is, a compound consisting of two different elements). when 10.0 g of the

Luda [366]

Answer is: a possible identity for the unknown compound is C₃H₈.

m(binary compound) = 10.0 g.

m(H₂O) = 16.3 g; mass of water.

M(O₂) = 32 g/mol; molar mass of oxygen.

M(binary compound) = 1.38 · 32 g/mol.

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m(H₂O) : n(binary compound) = 4 : 1.

Unknown cpmpound has 4 times more hydrogen than water, it has 8 hydrogen atoms.

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3 years ago

Which one of the following ions would be negatively charged with a charge of -2?

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3 years ago

Find the value of x in the triangle

myrzilka [38]

Answer:

55.52°

Explanation:

Concept tested: Sine rule of triangles

We need to know the sine rule

According to sine rule, if the three sides of a triangle are a, b and c and the corresponding angles, A, B and C

Then, $\frac{a}{SinA}=\frac{b}{SinB}=\frac{c}{SinC}$

In this case;

If we take, a = 5.7 units and A = 70°, and

b= 5 units, B = x°

Using the sine rule we can find the value of x

Therefore;

$\frac{a}{SinA}=\frac{b}{SinB}$

Then;

$\frac{5.7}{Sin70}=\frac{5}{Sinx}$

$6.0658=\frac{5}{sinx}$

$Sinx=0.8243$

Therefore, X = 55.52°

Therefore, the value of x in the triangle is 55.52°

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3 years ago