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sergejj [24]
4 years ago
5

How will water from the lake change rocks over time

Chemistry
1 answer:
tensa zangetsu [6.8K]4 years ago
6 0

It will slowly wear down

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A sample of seawater contains 1.3 g of calcium ions in 3,100 kg of solution. what is the calcium ion concentration of this solut
IrinaVladis [17]

A unit of ppm has an acronym of parts per million. The equivalent units of ppm is therefore mg/L and mg/kg. So the ppm is:

mass Ca+ = 1.3 g = 1300 mg

 

ppm = 1300 mg / 3100 kg

<span>ppm = 0.42 ppm</span>

6 0
3 years ago
A graduated cylinder contains 15.75 mL of water. A metal that weighs 32.138 g is added.
dexar [7]
<span>Displaced volume:

final volume - initial volume :

38.55 mL - 15.75 mL = 22.8 mL

D = m /  V

D = 32.138 / 22.8

D = 1.409 g/mL

hope this helps!



</span>
5 0
3 years ago
(7) need help asappp plss
natima [27]

Answer:

See explanation

Explanation:

The cold drink chiller is a cold substance which is inserted into a bottle of drink which contains warm liquid particles at a particular temperature.

Once the drink chiller is inserted, the liquid molecules around the drink chiller become cooler, denser and sink away from the drink chiller. Other warmer, less dense molecules of the liquid drink now replaces them around the drink chiller.

A convection current is thus set up for as long as the drink chiller is working.

3 0
3 years ago
Liquid sodium is being considered as an engine coolant. How many grams of liquid sodium (minimum) are needed to absorb 9.50 MJ 9
tensa zangetsu [6.8K]

Answer:

709415.584 g

Explanation:

This is a heat capacity  problem. We use the formula below to calculate.

Q=mcΔT

where Q is the quantity of heat

           m is the mass of substance

           ΔT is the change in temperature of substance( T2-T1).

Q= 9.5MJ = 9.5*10^(6}J

C.P = 30.8J/(K.mol)

temperature of sodium increases by 10°C which means our final temperature in kelvin T2 will be 510K

initial temperature T1= 500K

m= Q/[c (T2-T1)]

m= 9.5*10^(6}/ {30.8(510-500)]

m= 30844.156 mol of Na

Converting to grams we multiply by the molar mass of Na.

molar mass of Na = 23

mass of Na=   30844.156 *23

                  =709415.584 g

7 0
3 years ago
Briefly explain how you will isolate p-tert-butylphenol after you have extracted it into naoh solution.
GREYUIT [131]
To segregate p-tert-butylphenol after you have removed it into NaOH arrangement one would accelerate the p-tert-butylphenol by adding 3M HCl to the cooled arrangement until the point when it is acidic. At that point as the phenol isolates as an oil, one needs to cool the blend in an ice shower to encourage crystallization. The precious stones that are then framed are the p-tert-butylphenol which can be isolated from the arrangement by filtration utilizing the Hirsch pipe
6 0
4 years ago
Read 2 more answers
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