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2 years ago

What observations can you make about this group of people? Name one inference you can make from your observations.

Chemistry

2 answers:

Stells [14]2 years ago

7 0

Answer:

no no no who are these some look good but are black what is this

Aleonysh [2.5K]2 years ago

4 0

Answer:

they are funny and unite.

Thank You

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Na-23 has 12 neutrons. What is its atomic number

sweet-ann [11.9K]

Atomic number is 11.

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3 years ago

PLZ HELP WILL MARK BRAINLIEST

snow_lady [41]

Answer:

The male cone

Explanation:

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3 years ago

A horizontal row of the periodic table is usually referred to as a ____________

zaharov [31]

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3 years ago

Read 2 more answers

Cierta cantidad de gas ocupa 20 litros sometido a una presión de 1,5 atmósferas. Si lo comprimimos hasta 6 atmósferas, ¿qué volu

Mekhanik [1.2K]

Respuesta:

5 L

Explicación:

Paso 1: Información provista

Presión inicial (P₁): 1,5 atm

Volumen inicial (V₁): 20 L

Presión final (P₂): 6 atm

Paso 2: Calcular el volumen final del gas

Si asumimos temperatura constante y comportamiento ideal, podemos calcular el volumen final del gas (V₂) usando la Ley de Boyle.

P₁ × V₁ = P₂ × V₂

V₂ = P₁ × V₁ / P₂

V₂ = 1,5 atm × 20 L / 6 atm = 5 L

4 0

3 years ago

Express the concentration of a 0.0320 M aqueous solution of fluoride, F−, in mass percentage and in parts per million (ppm). Ass

denis23 [38]

Answer:

607 ppm

Explanation:

In this case we can start with the ppm formula:

$ppm=\frac{mg~of~solute}{Litters~of~solution}$

If we have a solution of 0.0320 M, we can say that in 1 L we have 0.032 mol of $F^-$ , because the molarity formula is:

$M=\frac{mol}{L}$

In other words:

$0.0320~M=\frac{mol}{1~L}$

$mol=0.032~M*1~L=0.032~mol$

$1~L~of~Solution=0.0320~mol~of~solute$

If we use the atomic mass of $F$ (19 g/mol) we can convert from mol to g:

$0.0320~mol~F^-\frac{19~g~F^-}{1~mol~F^-}~=~0.607~g$

Now we can convert from g to mg (1 g= 1000 mg), so:

$0.607~g\frac{1000~mg}{1~g}=607~mg$

Finally we can divide by 1 L to find the ppm:

$ppm=\frac{607~mg}{1~L}=~607~ppm$

We will have a concentration of 607 ppm.

I hope it helps!

4 0

3 years ago

What observations can you make about this group of people? Name one inference you can make from your observations.​

What observations can you make about this group of people? Name one inference you can make from your observations.