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alexira [117]
2 years ago
11

hola todos que tengan un lindo día mi hijo quiere saber esta respuesta se lo daría yo pero tengo mucho trabajo y bueno se los de

jo a ustedes espero que se lo respondan bien, muchas gracias que tengan buenos días como dije antes saludos

Chemistry
1 answer:
Butoxors [25]2 years ago
6 0

Answer:

3.

(A) 1,000 gramos en un kilogramo.

(B) 8 kilogramos

(C) 1,500 gramos en un kilogramo y medio

(D) 5.5 kilogramos

4.

(A) 283 grados Kelvin

(B) 423 grados Kelvin

(C) 27 grados Celsius

(D) -3 grados Celsius

5.

Unidades de Tiempo

(A) 600 seg

(B) 420 min

(C) 12,600 seg

(D) 2,280 seg

Unidades de Longitud

(A) 2,000 m

(B) 12,000 m

(C) 7.587 km

(D) 5.5 m

Unidades de Masa

(A) 15,000 g

(B) 0.7 kg

(C) 12 kg

(D) 4,500 g

Unidades de Temperatura

(A) 302 K

(B) 121°C

(C) 343 K

(D) -8°C

6.

a) metros

b) centimetros

c) centimetros

d) kilometros

e) kilometros

7.

a) 14.76 m

b) 1,476 cm

8.

a) El auto mas rapido es el segundo. 45/5= 9 metros en un segundo.

b) El primero. El segundo recorre 7m en un segundo 35/5= 7.

9.

a) 100 centavos en 1 peso.

b) 1,060 centavos en 10.60 pesos.

c) 6.50 pesos

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What is an element?
valentinak56 [21]

Answer:

An element is a substance that is made up of the same kind of atoms and

cannot be broken down into simpler substances by any known chemical means

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3 0
2 years ago
300g de acido comercial se disuelve en agua destilada contenidos en un cono, cuyo radio es de 0.005Km y 300cm de altura, si la d
guajiro [1.7K]

Answer:

97.0%m/m es la concentración de la solución

Explanation:

El porcentaje masa/masa (%m/m) se define como 100 veces el radio entre la masa de soluto (300g de HCl) y la masa de la solución. Para hallar la masa de la solución debemos hallar la masa del agua (Solvente) haciendo uso de la ecuación del volumen de un cono. Con el volumen del cono podemos hallar la masa del agua haciendo uso de la densidad, así:

<em>Volumen:</em>

Volumen Cono = π*r²*h / 3

Donde r es el radio = 0.300m

h la altura = 5m

Volumen = π*(5m)²*0.300m / 3

7.85m³

<em>Masa Agua:</em>

7.85m³ * (1.2g / m³) = 9.42g Agua

<em>Masa solución:</em>

300g HCl + 9.42g Agua = 309.42g Solución

<em>%m/m:</em>

300g HCl  / 309.42g * 100 =

<h3>97.0%m/m es la concentración de la solución</h3>
8 0
3 years ago
Pls help this a test for Google classroom
muminat

Occurs at a specific temperature

5 0
2 years ago
Which of these is an example of food engineering?
Andrej [43]

Answer:

a.labeling food with an ingredient list to inform consumers

Explanation:

3 0
3 years ago
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Hydrogen iodide, HI, is formed in an equilibrium reaction when gaseous hydrogen and iodine gas are heated together. If 20.0 g of
Kaylis [27]

Answer: D. 19.9 g hydrogen remains.

Explanation:

To calculate the moles, we use the equation:

\text{Number of moles}=\frac{\text{Given mass}}{\text {Molar mass}}

a) moles of H_2

\text{Number of moles}=\frac{20.0g}{2g/mol}=10.0moles

b) moles of I_2

\text{Number of moles}=\frac{20.0g}{254g/mol}=0.0787moles

H_2(g)+I_2(g)\rightarrow 2HI(g)

According to stoichiometry :

1 mole of I_2 require 1 mole of H_2

Thus 0.0787 moles of l_2 require=\frac{1}{1}\times 0.0787=0.0787moles of H_2

Thus l_2 is the limiting reagent as it limits the formation of product and H_2 acts as the excess reagent. (10.0-0.0787)= 9.92 moles of H_2are left unreacted.

Mass of H_2=moles\times {\text {Molar mass}}=9.92moles\times 2.01g/mol=19.9g

Thus 19.9 g of H_2 remains unreacted.

5 0
2 years ago
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