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Elden [556K]
3 years ago
10

Helppppppppppppppppppp????

Chemistry
2 answers:
Yuri [45]3 years ago
6 0

Answer: There are three main types of MS, relapsing primary progressive and secondary progressive

const2013 [10]3 years ago
5 0

what is the name of first bulgarian personal computer

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What is the wavelength of a 229 Hz sound wave moving at a speed of 345 m/s?
ANTONII [103]

Answer:

wave length=speed/frequency

=345/229

8 0
3 years ago
Atom
hammer [34]

Hello, There!

<h2>Question</h2>

Atom

Atomic theory of atoms:

Element:

Gas:

Liquid:

Magnetic field:

Particle:

Phase:

Plasma:

Scientific theory:

Solid:

Write the Meanings

<h2>Answer</h2>

Atom: the basic unit of an element

Atomic theory of atoms: a theory that states that all matter is made of atoms that cannot be divided or destroyed

Element: a substance that cannot be broken down into a simpler substance

Gas: the state of matter that does not have a definite shape or a definite volume

Liquid: the state of matter that has an indefinite shape but a definite volume

Magnetic field: a region around a magnetic material or moving electric charge

Particle: a tiny piece of matter

Phase: a unique form of the existence of matter

Plasma: an ionized gas of positively and negatively charged particles

Scientific theory: an explanation for some naturally occurring event, developed from extensive observations, experimentation, and reasoning

Solid: the state of matter that has a definite shape and volume

Therefore, I hope this helps And Good Luck!

8 0
3 years ago
Read 2 more answers
Zippy decides he needs a drink to wash down the cold Pring Pongs. There are two 355 mL cans of Kookie Cola in the mini-bar.
Lady bird [3.3K]

20.7 Degree celsius is the temperature of Zippy's room.

Explanation:

The initial conditions of the kookie cola will be depicted by P1,V1 and T1.

P1= 36.5 psi or 2.4816 atm

V1= 355ml or 0.35 L

T1= 275.5K

The final conditions are given P2,V2 and T2

P2= 38.9 psi or 2.6469 atm

V2 = 355 ml or 0.35 L

also the solubility of the carbon dioxide does not change with temperature.

Applying the formula

P1VI/T1=P2V2/T2

since volume does not change and remains constant.

It can be written as:

P1/T1=P2/T2

= 2.4816/275.5=2.6469/T2

T2= 293.85 K

7 0
3 years ago
(FILL IN THE BLANK)
dem82 [27]
It’s the first one ATP, NADH
8 0
2 years ago
The solubility of solid W in water is: 1.72 g/100 mL at 0°C, 21.3/100 mL at 100°C. a) How many mL of boiling water are required
grandymaker [24]

Answer:

a) Mass of solid W crystallized out 0°C is 141.564 g

b) 91.92% is the percent recovery.

Explanation:

The solubility of solid W in water at 100°C = 21.3 g/100 mL

Volume of water at 100C required to dissolve 154.0 g of W: x

\frac{154.0 g}{x}=\frac{21.3 g}{100 mL}

x=\frac{154.0 g\times 100 mL}{21.3 g}=723.0 mL

723.0 mL of water will dissolve 154.0 grams of solid W.

The solubility of solid W in water at 0°C = 1.72 g/100 mL

Mass of W soluble in 723.00 mL of water at  0°C = m

\frac{m}{723.0 mL}=\frac{1.72 g}{100 mL}

m=\frac{1.72 g\times 723.0 mL}{100 mL}=12.436 g

a) Mass of solid W crystallized out 0°C : 154.0 g- 12.436 g=141.564 g

b)  Percent recovery of solid at 0°C:

\frac{141.564 g}{154.0 g}\times 100=91.92\%

91.92% is the percent recovery.

5 0
3 years ago
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