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3 years ago

10

Bill bye states that “ as more and more species disappear, it is harder and harder to keep the ecosystem in balance because we d

on’t know what?

1 answer:

Aleonysh [2.5K]3 years ago

6 0

Answer:

what th efuter holds and what the specicies need and what is healthy for them.

Explanation:

give me bwanliest pweeas i only need three more

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Consider a pot of water at 100 C. If it took 1,048,815 J of energy to vaporize the water and heat it to 135 C, how many grams of

jeka57 [31]

Answer:

There was 450.068g of water in the pot.

Explanation:

Latent heat of vaporisation = 2260 kJ/kg = 2260 J/g = L

Specific Heat of Steam = 2.010 kJ/kg C = 2.010 J/g = s

Let m = x g be the weight of water in the pot.

Energy required to vaporise water = mL = 2260x

Energy required to raise the temperature of water from 100 C to 135 C = msΔT = 70.35x

Total energy required = $2260x+x\times2.010\times(135-100)=2260x+70.35x=2330.35x$

$2330.35x=1048815\\x=450.068g$

Hence, there was 450.068g of water in the pot.

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3 years ago

What do chemists study

ANTONII [103]

Answer:

Chemists investigate the properties of matter at the level of atoms and molecules. They measure proportions and reaction rates in order to understand unfamiliar substances and how they behave, or to create new compounds for use in a variety of practical applications.

Explanation:

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3 years ago

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Which of the following has 62 neutrons, 46 protons, and 46 electrons?

Vesna [10]

The answer is Silver (Ag)

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3 years ago

The volume of 2.050 M copper(II) nitrate that must be diluted with water to prepare 750.0 mL of a 0.8543 M solution is equal to

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.

.

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´.

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2 years ago

5.0 g of copper was heated from 20°C to 80°C. How much energy was used to heat Cu?

ale4655 [162]

Answer:

100 J of energy are needed to heat the copper from 20∘C to 80∘C .

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