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boyakko [2]
3 years ago
10

As water molecules move through the hydrological cycle, water both gains and loses energy. In which case would the water be losi

ng energy?
Chemistry
2 answers:
andrew-mc [135]3 years ago
7 0

Answer:

In condensation water loses energy in water cycle.

Explanation:

The water cycle describes the continuous motion of water on, above, and below the surface of earth and it is also known as hydrologic cycle. In this process water both gains and loses energy. When evaporation occurs it gains energy from surrounding and cools the environment. When condenses occurs it loses energy and warms the environment.

Triss [41]3 years ago
5 0
Condensation. I just completed the test
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Describe the concept of using radioactive elements to establish an age for a fossil. Be sure to include how the parent and daugh
Nadusha1986 [10]

Answer:

The nuclear decay of radioactive elements is a process that is a useful tool for determining the absolute age of fossils and rocks. It is used as a clock, in which daughter elements or isotopes converted from parent isotopes by decaying at a particular time.

Radioactive decay rates are constant and do not change over time. It is measured in half-life. A half-life is a time it takes half of a parent isotope to decay and converted into a stable daughter isotope. How many parent isotopes and daughter isotopes present in the fossil or their abundance can help in determining the age of fossil or rock.

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3 years ago
How many grams of carbon are present in 45.0g of CCl4
pentagon [3]
Molar Mass of CCl4= 12+4(35.5)=154 g/mol    g Carbon= 45.0g/(154 g/mol)=0.292 mole



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3 years ago
Someone answer the limited regent...
OleMash [197]

Answer:

20 g Ag

General Formulas and Concepts:

<u>Chemistry - Stoichiometry</u>

  • Using Dimensional Analysis

<u>Chemistry - Atomic Structure</u>

  • Reading a Periodic Table

Explanation:

<u>Step 1: Define</u>

[RxN]   Cu (s) + AgNO₃ (aq) → CuNO₃ (aq) + Ag (s)

[Given]   10 g Cu

<u>Step 2: Identify Conversions</u>

[RxN]   1 mol Cu = 1 mol Ag

Molar Mass of Cu - 63.55 g/mol

Molar Mass of Ag - 197.87 g/mol

<u>Step 3: Stoichiometry</u>

<u />10 \ g \ Cu(\frac{1 \ mol \ Cu}{63.55 \ g \ Cu})(\frac{1 \ mol \ Ag}{1 \ mol \ Cu} )(\frac{197.87 \ g \ Ag}{1 \ mol \ Ag} ) = 16.974 g Ag

<u>Step 4: Check</u>

<em>We are given 1 sig fig. Follow sig fig rules and round.</em>

16.974 g Ag ≈ 20 g Ag

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Identify the products in the following chemical resction 2NaHCO3 + CaCI2 --&gt; CaCO3 + CO2 + 2NaCI + H2O​
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the products are:

CaCO3 Calcium Carbonate

CO2 carbon dioxide

NaCI Sodium chloride

H2O​ Water

8 0
3 years ago
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