3 years ago

During an experiment a student measured the mass of a copper wire to be

Chemistry

1 answer:

Aleksandr-060686 [28]3 years ago

5 0

Quantitative data because it involves a number (quantity)

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Acetic acid is an example of __________.

shusha [124]

Answer:

an inorganic compound

Explanation:

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3 years ago

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The correct mass of a block is 28.0 grams. A chemist measures the block

Sati [7]

Answer: NOT accurate, but precise.

[translation: You screwed up, but did it in style].

Explanation:

The average mass measurement is 41.95g. Compared to the actual value of 28.0 grams, the measurement is NOT accurate.

The standard deviation for the data is 0.112. Dependiong on your definition of precision, this looks relatively good. I would go for precise.

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2 years ago

Earthquakes are common at ocean-continent convergence zones but not ocean-ocean convergence zones. TRUE FALSE Check it

Maru [420]

Answer:

FALSE

Explanation:

The earthquakes are common in both types of convergences is oceanic and continental and ocean to oceanic convergence. As the process of subduction takes places at the oceanic - oceanic boundary and resultant plate slide down other plate leading to recycling of the crust, volcanic eruptions and this leads to the formation of a volcanic arc, trenches, and faults.

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2 years ago

Imagine that small pieces of the metals copper, magnesium and iron are placed in three test tubes labeled A, B, and C, respectiv

Marizza181 [45]

A) Cu

Cu + 2HCl --> CuCl2 + H2(g)

Products predicted: Copper(II) choloride and hydrogen gas

B) Mg

Mg + 2HCl --> MgCl2 + H2

Products predicted: magnesium chloride + hygrogen gas

C) Fe

Fe +2 HCl -> FeCl2 + H2, or
2Fe +6 HCl -> 2FeCl3 + 3H2

Products predicted: Iron(II) chloride, iron (III) chloride and hydrogen gas.

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3 years ago

Some states authorize a to make healthcare decisions ------- for patients who can't make them because they're incapacitated. O a

Tom [10]

Explanation:

A student flips four different coins at the same time. Which choice shows all of the possibilities for the results of the coin toss? (H = heads, T = tails)

A HH, TT, HT, TH

B HHHT, HTTT, HHTT

C HHH, TTT, HTH, HTT

D HHHH, HTHH, HTTH, HTTT, TTTT

7 0

3 years ago