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Ivan
3 years ago
8

Can someone help me I need to convert the following...

Chemistry
1 answer:
motikmotik3 years ago
6 0

Answer:

rr343553565656554

Explanation:

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Liquid nitrogen boils at –195.8°C. Express the boiling point of liquid nitrogen in kelvin
inessss [21]

Answer:

\boxed {\boxed {\sf 77.35 \ K}}

Explanation:

The Celsius and Kelvin scales are used to measure the temperature of matter.  Their scales and unit differences are the same (1 K increase = 1 °C increase), but they have different starting points.

So, the conversion is quite simple and only requires addition because of the different starting points. The formula is:

T_K = T_C+ 273.15

The boiling point of liquid nitrogen is -195.8 °C. We can substitute this value into the formula.

T_K= -195.8 + 273.15

T_K= 77.35 K

The boiling point of liquid nitrogen is 77.35 Kelvin.

4 0
2 years ago
A specific combination of bonded atoms which always react in the same way is known as
grigory [225]
A specific combination of bonded atoms which always react in the same way, regardless of the particular carbon skeleton is known as the functional group. These are specific groups of atoms or bonds within organic molecules that accounts for the characteristic chemical reactions of those molecules.  Examples of functional groups are the Carbonyl group, alkyl Halides, aldehydes and ketones among others.
4 0
3 years ago
Tides are the rise and fall of surface levels of Earth's ocean water caused by the gravitational effects of which two celestial
NeTakaya

Answer:

<h3>D)Moon and sun</h3>

Explanation:

Because the gravitational pull of the moon is weaker on the far side of the Earth, inertia wins, the ocean bulges out and high tide occurs.

hope it helps:)

4 0
3 years ago
Read 2 more answers
Arrange the following aqueous solutions in order of increasing boiling point temperature (lowest to highest temperature, with 1
Elanso [62]

Answer:

0.20 m glucose < 0.40 m NaCl < 0.30 m BaCl2 < 0.50 m Na2SO4.

Explanation:

Step 1: Data given

ΔT = i*Kb*m

⇒ΔT = the boiling point elevation =  Shows how much the boiling point increases

⇒i = the van't Hoff factor: Says in how many particles the compound will dissociate

⇒ Since all are aqueous solutions Kb for all solutions is the same (0.512 °C/m)

⇒m = the molality

Step 2:

0.20 m glucose

ΔT = i*Kb*m

⇒ΔT = the boiling point elevation = TO BE DETERMINED

⇒i = the van't Hoff factor for glucose = 1

⇒ Kb = 0.512 °C/m

⇒m = 0.20 m

ΔT = 1*0.512 * 0.20

<u>ΔT = 0.1024 °C</u>

0.30 m BaCl2

ΔT = i*Kb*m

⇒ΔT = the boiling point elevation = TO BE DETERMINED

⇒i = the van't Hoff factor for BaCl2 = Ba^2+ + 2Cl- : i = 3

⇒ Kb = 0.512 °C/m

⇒m = 0.30 m

ΔT = 3*0.512 * 0.30

<u>ΔT = 0.4608 °C</u>

0.40 m NaCl

ΔT = i*Kb*m

⇒ΔT = the boiling point elevation = TO BE DETERMINED

⇒i = the van't Hoff factor for NaCl = Na+ + Cl- : i = 2

⇒ Kb = 0.512 °C/m

⇒m = 0.40 m

ΔT = 2*0.512 * 0.40

<u>ΔT = 0.4096 °C</u>

0.50 m Na2SO4.

ΔT = i*Kb*m

⇒ΔT = the boiling point elevation = TO BE DETERMINED

⇒i = the van't Hoff factor for Na2SO4 = 2Na+ + SO4^2- : i =3

⇒ Kb = 0.512 °C/m

⇒m = 0.50 m

ΔT = 3*0.512 * 0.50

<u>ΔT = 0.768 °C</u>

0.20 m glucose < 0.40 m NaCl < 0.30 m BaCl2 < 0.50 m Na2SO4.

8 0
3 years ago
How to Balance symbol equations?
Arlecino [84]

2\; \text{Ca} + \text{O}_2 \to 2\; \text{CaO}

Try the following steps:

  1. Set the coefficient in front of the species with the greatest number of different atoms to one. In this question consider assigning Calcium Oxide \text{CaO} a coefficient of one for containing two elements.
  2. Deduce, using the rule of atomic conservation, the coefficient in front of other species. The product side of this equation contains one calcium \text{Ca} and one oxygen \text{O} atom, so should the product side. Thus assign calcium \text{Ca} a coefficient of 1 and oxygen gas a coefficient of 1/2- since 1/2 \; \text{O}_2 \times 2 \; \text{O atoms per O}_2 = 1 \; \text{O atom}: 1 \; \text{Ca} + 1/2 \; \text{O}_2 \to 1\; \text{CaO}
  3. In case any of the coefficient contains fractions, multiply all coefficients in the equation with the least common multiple of their denominators to convert the coefficients into whole numbers. In this example, multiple all coefficients by 2 to deduce the equation shown at the beginning of this answer: 2\; \text{Ca} + \text{O}_2 \to 2\; \text{CaO}.
7 0
2 years ago
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