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3 years ago

How many grams of O2 are in 1.51 x 1023 molecules?

Chemistry

1 answer:

VMariaS [17]3 years ago

7 0

Answer:

I think is c 4.00 g

Explanation:

that was my answer

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Which of the following is most likely a chemical reaction?

masha68 [24]

Answer:

Two solid powders are combined and shaken. The substances form a mixture.

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2 years ago

Climate has changed naturally throughout Earth’s history, but how is climate change today different?

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2 years ago

14 km is how many centimeters?

Yuki888 [10]

Answer:

1400000 cm

Explanation:

14 km equals to 1400000 cm (14 km = 1400000 cm)

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2 years ago

A 32.5 g iron rod, initially at 22.4 ∘C, is submerged into an unknown mass of water at 63.0 ∘C, in an insulated container. The f

a_sh-v [17]

Answer:

$m_{H_2O}=39.0g$

Explanation:

Hello,

In this case, is possible to infer that the thermal equilibrium is governed by the following relationship:

$\Delta H_{iron}=-\Delta H_{H_2O}\\m_{iron}Cp_{iron}(T_{eq}-T_{iron})=-m_{H_2O}Cp_{H_2O}(T_{eq}-T_{H_2O})$

Thus, both iron's and water's heat capacities are: 0.444 and 4.18 J/g°C respectively, so one solves for the mass of water as shown below:

$m_{H_2O}=\frac{m_{iron}Cp_{iron}(T_{eq}-T_{iron})}{-Cp_{H_2O}(T_{eq}-T_{H_2O}} \\\\m_{H_2O}=\frac{32.5g*0.444\frac{J}{g^0C}*(59.7-22.4)^0C}{-4.18\frac{J}{g^0C}*(59.7-63.0)^0C} \\\\m_{H_2O}=39.0g$

Best regards.

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3 years ago

What is Co³⁺ and Co¹⁺

WITCHER [35]

Answer:

https://clever.com/

Explanation:

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2 years ago