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harina [27]
3 years ago
14

The measurement 3.8 x 10^3 g could also be written as

Chemistry
2 answers:
solmaris [256]3 years ago
5 0

Right now it's written in scientific notation, so you can just move the decimal place in 3.8 to the right 3 times (as it is times 10 to the third power) to get 3,800g.

UkoKoshka [18]3 years ago
5 0

Answer:

3800

Explanation:

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A pump contains 0.5 L of air at 203kPa. You draw back on the piston of the pump until the pressure reads 25.4kPa. What is the vo
densk [106]
<h3><u> Answer</u>;</h3>

= 4.0 L

<h3><u>Explanation;</u></h3>

Boyle's law states that the volume of a fixed mass of a gas is inversely proportional to pressure at a constant temperature.

Therefore; <em>Volume α 1/pressure</em>

<em>Mathematically; V α 1/P</em>

<em>V = kP, where k is a constant;</em>

<em>P1V1 = P2V2</em>

<em>V1 = 0.5 l, P1 =203 kPa, P2 = 25.4 kPa</em>

<em>V2 = (0.5 × 203 )/25.4 </em>

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3 years ago
What must be satisfied for a hypothesis to be useful?
Alex_Xolod [135]

Answer:

it must be testable I think that's the answer

5 0
2 years ago
Read 2 more answers
Which of these is a unique property of bases?
tatuchka [14]

Answer:

A. Feels slippery

Explanation:

Bases are the only types of compounds that have a slippery feel.

B is <em>wrong</em><em>.</em> Most bases do not contain carbon, but organic compounds always do.

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What is the first answer ?
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2 years ago
Which of the following substances has the highest melting point?
Aleksandr [31]

Nonane (b) has the highest melting point.

-----------------------------

A caveat: I'm assuming that we're dealing with the straight-chain isomers of these alkanes (specifically pentane and nonane). The straight-chain isomer of pentane (<em>n</em>-pentane, CH3-[CH2]3-CH3) has a melting point of -129.8 °C; the straight-chain isomer of nonane (<em>n-</em>nonane, CH3-[CH2]7-CH3) has a melting point of -53.5 °C. The pattern holds as you go down (or up): The more carbon atoms, the higher the melting point. So, in decreasing order of melting points here, you'd have the following: nonane > pentane > butane > ethane.

However, one structural isomer of pentane, neopentane, has a melting point of -16.4 °C, which is <em>higher </em>that the melting point of <em>n</em>-nonane despite neopentane having the same molecular formula as its straight-chain isomer. Of course, you're not to blame for coming up with this question; this is just some extra info to keep in mind.

5 0
3 years ago
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