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3 years ago

Cuales son las Desventajas de la radioactividad en la industria?Ayudarme porfa no encuentro nada importante

Chemistry

1 answer:

andreyandreev [35.5K]3 years ago

8 0

Answer:

Ver explicacion

Explanation:

Una desventaja del uso de la industria de la energía nuclear es la posible exposición de los trabajadores a una dosis letal de radiación.

Este tipo de exposición es muy perjudicial para las personas.

En segundo lugar, el hecho de que la fuente de energía nuclear esté siempre encendida significa que debe ser atendida regularmente por personal competente.

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Identify the situation where work is being done. Carrying a box of crayons across the room. Lifting a backpack off the floor Hol

Likurg_2 [28]

Lifting the backpack off the floor. Force is being applied in only one direction then (up) which is what constitutes as work. Carrying the box of crayons applies force in two directions (up and forward), which cancel each other out. Work has a vector, which is a quantity containing both direction and magnitude (one, finite direction, not two).

7 0

3 years ago

Read 2 more answers

The organelle is found in plant cells contains a green pigment and is the site of photosynthesis. this organelle is the _______

Liono4ka [1.6K]

Answer: Chloroplasts
Reasoning: I just had my 830th lesson in school about these

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2 years ago

In an experiment, 34.8243g of copper (II) nitrate hydrate, Cu(NO3)2•zH2O was heated to a constant mass of 27.0351g. Calculate th

Leto [7]

Answer:

1) The mass of water lost = 7.7892 grams

2) Z = 3: Cu(NO3)2*3H2O

Explanation:

Step 1: Data given

Mass of copper (II) nitrate hydrate, Cu(NO3)2•zH2O = 34.8243 grams

Mass of substance after heating = 27.0351 grams

Molar mass of Cu(NO3)2 = 187.56 g/mol

Molar mass of H2O = 18.02 g/mol

Step 2: Calculate mass of water

The mass of water is the mass lost after heating.

Mass water = 34.8243 - 27.0351 = 7.7892 grams of water

Step 3: Calculate moles of Cu(NO3)2

Moles Cu(NO3)2 = Mass Cu(NO3)2 / Molar mass Cu(NO3)2

Moles Cu(NO3)2 = 27.0351 grams / 187.56 g/mol

Moles Cu(NO3)2 = 0.144 moles

Step 4: Calculate moles of H2O

Moles H2O = 7.7892 grams / 18.02 g/mol

Moles H2O = 0.432 moles

Step 5: Calculate Z

z = moles H2O / moles Cu(NO3)2

Z = 0.432/0.144

Z = 3

This means we have 3 water molecules in the formula. This makes the formula ofthe hydrate: Cu(NO3)2*3H2O

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3 years ago

A chemistry student needs 10.00 g of isopropenylbenzene for an experiment. He has available 120. g of a 42.7% w/w solution of is

Vanyuwa [196]

Answer: The mass of solution that the chemistry student should use is 23.4 grams

Explanation:

We are given:

Available mass of isopropenylbenzene = 120. g

Amount of isopropenylbenzene needed by chemistry student = 10.00 g

42.7 % (w/w) solution of isopropenylbenzene.

This means that 42.7 grams of isopropenylbenzene is present in 100 grams of solution.

To calculate the mass of solution for given needed of isopropenylbenzene, we apply unitary method:

For 42.7 grams of isopropenylbenzene, the amount of solution needed is 100 grams

So, for 10.00 grams of isopropenylbenzene, the amount of solution needed will be = $\frac{100}{42.7}\times 10=23.4g$

Hence, the mass of solution that the chemistry student should use is 23.4 grams

3 0

3 years ago

Pliss help

Vladimir [108]

Answer: I believe it is artificial selection (not certain though)

Explanation: modern day dogs have been bread an domesticated to be used by humans in ways we see fit.

5 0

3 years ago