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svlad2 [7]
3 years ago
14

Classify lead: Select one: C = compound HE = heterogeneous mixture S = homogeneous mixture/solution E = element

Chemistry
1 answer:
Ira Lisetskai [31]3 years ago
5 0

Lead is an E (element) and can be found on the periodic table.

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Which of the following free-body diagrams is a balanced force?
sleet_krkn [62]

Answer:

2

Explanation:

#1 is incorrect as there is no upward force that would balance the 5 N downward force

#3 is incorrect 2 is less than 5 = net force downward of 3 N

#4 is incorrect 5 is greater than three = 2 N net force going to the left and 2N going up

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3 years ago
How much energy is involved to cool 16.2 g of steam at 115.0°C to -2.00°C?
love history [14]

Explanation:

think its specific heat of water = 4.18 J/g°Ci

6 0
3 years ago
Classify the following processes as exothermic or endothermic: (d) a person running;
Sonja [21]

The process releases energy and consequently we classify it as exothermic. (d) a person running releases warmness as muscle mass paintings. therefore, the procedure is exothermic.

d) Exothermic, heat is released as a person runs and muscle groups perform work.

A chemical response or bodily exchange is exothermic if warmth is released by using the system into the environment. Because the surroundings are gaining heat from the system, the temperature of the surroundings increases. The sign of q for an exothermic procedure is -ve due to the fact the device is dropping heat.

Some other examples of exothermic reactions:

1)Snow Formation in Clouds.

2)Burning of a Candle.

3)Rusting of Iron.

4)Formation of Ion Pairs.

5)response of strong Acid and Water. etc...

Learn more about exothermic reactions here: brainly.com/question/14018816

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6 0
2 years ago
Fission fusion worksheet nuclear weapon
kari74 [83]
Nuclear fusion and fission are two atomic processes that release tremendous amounts of energy. The primary difference is that in fission, heavier atoms are broken down into smaller ones, while smaller atoms join together to form heavier ones in fusion.

The process of fission is the one that is used in atomic bombs and nuclear power plants. Fusion requires a large amount of energy to be started and is the energy production process for stars.
6 0
3 years ago
Which acid is weaker? 1. they have the same strength. 2. hbro2 3. hclo2?
iVinArrow [24]
HBrO2 is weaker than HClO2.
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3 years ago
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