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Tanya [424]
2 years ago
11

During a science investigation, a sample of matter breaks down into two kinds of atoms. Was the original sample an element or a

compound? Explain.
Chemistry
1 answer:
nevsk [136]2 years ago
3 0
The original sample was a compound because it was composed of two different elements and was not purely one element
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A tank contains hermit crabs and frogs. What kinds of animals are inside of the tank? Check all that are true. fish invertebrate
aev [14]

Answer:

Vertebrates, invertebrates, and amphibians.

Explanation:

Vertebrates have backbones. Frogs have back bones.

Invertebrates do not have backbones. Hermit crabs do not have back bones.

Amphibians are cold-blooded vertebrate animals. Frogs are cold-blooded vertebrate animals.

5 0
3 years ago
By mistake, you added salt instead of sugar to the<br> oil. How can you remove the salt?
Jet001 [13]

Answer:

by adding water into the mix

Explanation:

this will dissolve the salt

5 0
2 years ago
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Condensation is the change from liquid to water cycle
kogti [31]

Answer:

hi! merry xmas!

Explanation:

Condensation is the process where water vapor becomes liquid. It is the reverse of evaporation, where liquid water becomes a vapor.

Condensation happens one of two ways: Either the air is cooled to its dew point or it becomes so saturated with water vapor that it cannot hold any more water.

6 0
3 years ago
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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°

6 0
2 years ago
Describe the three types of system: a.open: b.closed: c. Isolated:
Mnenie [13.5K]

An open system is when there is a transfer of energy and matter with its surroundings.

A closed system is where there is a transfer of energy, may it be heat or work, but not matter with its surroundings.

An isolated system is where there is no transfer of energy or matter with its surroundings.

4 0
2 years ago
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