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tankabanditka [31]
3 years ago
12

Of the objects below, ________ is the most dense. Of the objects below, ________ is the most dense.

Chemistry
1 answer:
mario62 [17]3 years ago
8 0

The correct answer is option B.<span>
n object with a volume of 3.91 × 10-24 nm3 and a mass of 7.93 × 10-1 ng is the most dense.
Density is the mass per unit volume. In all the options mass and volume are given but in different units, first convert volume into L, cm3 or ml and mass to g or kg and then we can calculate the density by using the formula:
Density = Mass / Volume</span>

<span> </span>

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What would be the volume in millilitres of a blood sample of 2.15 microliters (ul)?​
Zanzabum

2.15 x 10⁻³mL

Explanation:

Given parameter:

    Volume of blood sample in uL = 2.15uL

Conversion           uL → mL

   micro- and milli-  are both prefixes of sub-units.

liter is a unit of volume of a substance.

       micro - is 10⁻⁶

       milli- is of the order 10⁻³

The problem is converting from micro to milli:

     if we multiply  10⁻⁶ by 10³ we would have our milli;

  1000uL = 1mL

  2.15uL :   2.15uL x \frac{1mL}{1000uL} = 2.15 x 10⁻³mL

learn more:

Volume brainly.com/question/5055270

#learnwithBrainly

4 0
3 years ago
Help me with this question so I can move on from it.
fomenos

Just look it up on google kodvjkngkrefsnjkvjfrnefsjkj

7 0
3 years ago
A certain gas occupies a volume of 26L when the applied pressure is 5.7atm. find the pressure in the system when the gas is comp
sergiy2304 [10]
P1 = 5.7atm V1 = 26L
P2 = ? V2 = 6.5 L

By Boyles Law,
P1V1 = P2V2
5.7 × 26 = P2 × 6.5
By solving,
P2 = 22.8atm.
8 0
3 years ago
AYUDENME A CONTESTAR ESTO
Zigmanuir [339]

umm how do you begin answering that ??

8 0
3 years ago
The men's world record for swimming 1500 m in a long course pool is 14 min 34.56 s. At this rate how many seconds would it take
vlabodo [156]
Distance = 1500m, time = 14min 34.56s = 14*60 + 34.56 = 874.56s

Speed = Distance / time = 1500/874.56 = 1.715 m/s

In order to swim 0.7 miles, 1 mile = 1609.344 m

Time = Distance / speed = 1609.344 m / 1.715 m/s = 938.393 seconds

938/60 = 15 minutes, 38 seconds.

= 15 minutes 38.393 seconds.
6 0
3 years ago
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