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HACTEHA [7]
3 years ago
9

A sample of a substance has a high density, yet a low particle motion. This sample must be a

Chemistry
2 answers:
kiruha [24]3 years ago
5 0

Answer:

A solid

With solids the particles are very close together making the substance very dense, and because the particles are so close they don't have very much room to move, making the particle motion very low.

vitfil [10]3 years ago
4 0
It must be a high destiny
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Si un carabinero está controlando velocidad en la carretera y pistolea mi vehículo, está midiendo mi rapidez media
Olin [163]

Answer:

Si.

Explicación:

Si un oficial de policía está controlando la velocidad en la carretera y dispara al vehículo con una pistola de radar. El policía mide la velocidad media del coche con esta pistola de radar. Una pistola de radar es un dispositivo que se utiliza para medir la velocidad de los objetos en movimiento que fue inventado por Bryce K. Brown en el año de 1954. La pistola de radar se utiliza con fines policiales para calcular la velocidad de los vehículos en movimiento.

5 0
3 years ago
The maximum contaminant level (MCL) set by the EPA of cadmium in drinking water is 0.0050 mg/L . Convert the MCL of cadmium from
stira [4]

Answer:

5 ppb of Cd

Explanation:

Given , Concentration = 0.0050 mg/L

To find this concentration in parts per billion

As,

1 mg per liter = 1 ppm

Parts per billion is defined as the number of the units of the mass of contaminant per thousand million units of the total mass. The relation between ppm and ppb is shown below as:

1 ppm = 1000 ppb

Concluding as:

1 mg per liter = 1000 ppb

So,

0.0050 mg/L = 1000 × 0.0050 ppb = 5 ppb of Cd

8 0
3 years ago
What is the maximum length of a polyethene chain with molar mass 10^6 and monomer length 2.5?
ziro4ka [17]

Answer:

L=7.0125*10^-5

Explanation:

LET  

 Length of polyethene chain= L

Molecular weight OF polyethene= MW

Molecular weight of monomer =mw

Monomer length= l

L=(MW/mw) *l

              L= (28.05g/mol10^6gmol-1) * 2.5

             L=70.125*10^-6

            L=7.0125*10^-5

Hence, the length will be L=7.0125*10^-5 .

7 0
4 years ago
if you have a solution that contains 46.85 g of codeine, C18H21NO3, in 125.5 g of ethanol, C2H5OH, what is the mole fraction of
OverLord2011 [107]

Answer:

The mole fraction of codeine is 5.4%

Explanation:

Mole fraction = Mole of solute / Total moles (Mole solute + Mole solvent)

Solute (Codeine)

Molar mass 299.36 g/m

Mass / Molar mass = Mole →  46.85 g /299.36 g/m = 0.156 moles

Solvent (Ethanol)

Molar mass 46.07 g/m

125.5 g / 46.07 g/m = 2.724 moles

Mole fraction (Codeine) 0.156 / (0.156 + 2.724) → 0.054

3 0
3 years ago
MARK AS BRAINLIEST ASAP plz thanks
dimulka [17.4K]
The answer is C. If u have any other questions don’t be afraid to ask.
3 0
3 years ago
Read 2 more answers
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