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3 years ago

How do you convert Celsius to kelvins

1 answer:

5 0

Answer: The values can be converted from one unit to other unit still keeping the meaning same. We use the number 273 (273.15 exactly) to convert from Celsius to Kelvin and vice versa. . ... Kelvin temperature scale: In Kelvin temperature scale, the zero point is shifted from freezing point of water to the absolute zero point.

Explanation:

Basically the answer

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How many grams of tris (mw 121.1) would you need to prepare 100 ml of a 100 mm tris solution? _________ grams?

Tems11 [23]

Molarity = (Mass/ molar mass) x (1/ volume of solution in Litres)

Mass = Molarity x molar mass x volume of solution in Litres

Molarity of Tris = 100 mM = 0.1 M

volume of Tris sol. = 100 mL = 0.1 L

molar mass of Tris = 121.1 g/mol

Hence,

mass of Tris = Molarity of Tris x molar mass ofTris x volume of Tris solution

= 0.1 M x 121.1 g/mol x 0.1 L

= 1.211 g

mass of Tris = 1.211 g

7 0

3 years ago

how many litres of 0.500M HCL(aq) are needed to react completely with 0.100 mol of Pb(NO3)2, forming a precipitate of PbCl2(s)..

katrin2010 [14]

The volume that is needed to react completely with 0.100 mol of lead nitrate is 0.400 L. It is because 2 moles of HCl are required for every mole of lead nitrate.
2 x 0.100 mole Pb(NO₃) = 0.200 mole HCl
0.200 mol HCl = L x 0.500 M

8 0

3 years ago

Read 2 more answers

Which of the following states of matter has no definite shape but does have a fixed volume?

Black_prince [1.1K]

The state of matter that has no definite shape but has a fixed volume is B. Liquid.

6 0

3 years ago

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Pitchblende is ore of _____. plutonium curium uranium radium

lisabon 2012 [21]

Answer:

I believe it is radium

Explanation:

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3 years ago

What is the kinetic energy, in joules, of a molecule of carbon tetrachloride moving at a speed of 255 m s–1 (use the appropriate

hram777 [196]

Answer:

The kinetic energy of a molecule of carbon tetrachloride is 8.29 zJ.

Explanation:

The kinetic energy of a molecule of carbon tetrachloride is given by:

$K = \frac{1}{2}mv^{2}$

Where:

m: is the mass

v: is the speed = 255 m/s

To find the mass we need to find the molar mass for CCl₄, and use the Avogadro's number, knowing that in 1 mol of carbon tetrachloride we have 6.022x10²³ molecules:

A (C) = 12.011 g/mol

A (Cl) = 35.45 g/mol

The molar mass (M) of CCl₄ is:

$M = A (C) + 4*A (Cl) = 12.011 g/mol + 4*35.45 g/mol = 153.81 g/mol$