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Sloan [31]
3 years ago
6

In science test are sometime clled

Chemistry
2 answers:
natita [175]3 years ago
4 0

Answer:

In the scientific method, an experiment is an empirical procedure that arbitrates competing models or hypotheses. Researchers also use experimentation to test existing theories or new hypotheses to support or disprove them

Explanation:

Hope this helps

Sever21 [200]3 years ago
4 0

Answer:

Tests can be called experiments.

Explanation:

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3 years ago
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Find the mass of 0.235 moles of SiO2? (NOTE: use correct significant figures!)
marta [7]

Answer: 14.1g

Explanation:

Given that,

number of moles of SiO2 = 0.235 moles

Mass in grams = Z (let unknown value be Z)

Molar mass of SiO2 = ?

To get the molar mass of SiO2, use the atomic mass

Silicon = 28g;

Oxygen = 16g

i.e Molar mass of SiO2 = 28g + (16g x 2)

= 28g + 32g

= 60g/mol

Now, apply the formula

Number of moles = Mass / molar mass

0.235 moles = Z / 60g/mol

Z = 0.235 moles x 60g/mol

Z = 14.1 g

Thus, the mass of SiO2 is 14.1 grams.

8 0
3 years ago
PLs heLp Me
olchik [2.2K]

Answer:

Opaque → a.no light travels through the material; all light is reflected or absorbed

Translucent → b.some light travels through the material and the image cannot be seen clearly

Transparent → c.all light travels through the material and the image can be seen clearly

Explanation:

Hope this helps :)

7 0
3 years ago
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Please help me!!!!!!
Norma-Jean [14]

Answer:

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4 0
2 years ago
What are some similarities and differences between physical and chemical weathering
mote1985 [20]
Similarities:
they both made sediment into soil
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they both made sediments have cracks

differences:
physical is reliant usually on contact with atmospheric condition

chemical transforms rocks into sediments while physical only breaks it down

chemical uses chemical reactions


(a brainliest would be appreciated)
3 0
3 years ago
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