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Lady_Fox [76]
3 years ago
14

When planning a simple experiment, what does it mean to “test one variable”?

Chemistry
1 answer:
SSSSS [86.1K]3 years ago
3 0

Answer:

I believe the answer is "b". "During the experiment, the scientist has only one element, or variable, that is changed to test the hypothesis."

Explanation:

I remember from last year but I'm not totally sure. Good luck!

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0.1005 liters is the same as??
olga2289 [7]
100.5cm or 100.5ml 

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3 0
4 years ago
You have a sample of each of the following five metals, with the mass and density
Sindrei [870]

Answer:

E) Silver, mass = 420 g, d = 10.5 g/cm.

Explanation:

Hello,

In this case, since the density is defined by:

\rho =\frac{m}{V}

Given the mass and density, we compute the volume via:

V=\rho *m

Thus, for each vase we have:

A) V=135g*2.7g/cm^3=364.5cm^3

B) V=305g*8.92g/cm^3=2720.6cm^3

C) V=240g*7.86g/cm^3=1886.4cm^3

D) V=75g*1.74g/cm^3=130.5cm^3

E) V=420g*10.5g/cm^3=4410cm^3

In such a way, the largest volume corresponds to E) Silver, mass = 420 g, d = 10.5 g/cm.

Best regards.

7 0
3 years ago
How many atoms are represented in the formula CaCO3
Dennis_Churaev [7]

Answer:100

Explanation:

CaCO3=40+12+3×16

=100

4 0
4 years ago
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Donald is writing a chemical name from a chemical formula. He has just identified that there are five atoms of oxygen bonded wit
gtnhenbr [62]
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4 0
3 years ago
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What chemical reaction is SiCl2>Si+Cl2
dlinn [17]

The  chemical  reaction  of  SiCl2→ Si +Cl2  is

A  decomposition reaction


<u><em>Explanation</em></u>

  • <u>A  decomposition reaction</u>  is type  of  chemical  reaction  which involve  breaking  down  a compound into  smaller compounds or individual elements.
  • <em>SiCl2→  Si +Cl2   is a decomposition reaction because  SICl2   is broken    down into  Si  and Cl2</em>
  • Decomposition reaction often involve input of energy in  form of  heat to break down  compounds
3 0
3 years ago
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