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Serjik [45]
3 years ago
6

Wind and ocean currents do not move in straight lines; instead, they curve as they move across the planet. What is responsible f

or this pattern of movement? A.differences in water temperature B. differences in water salinity C.the Coriolis effect D.differences in water density
please help now
Chemistry
2 answers:
blsea [12.9K]3 years ago
5 0
C............................
klasskru [66]3 years ago
3 0

The correct answer is:    [C]:

____________________________________________

             →  " the Coriolis effect " .

____________________________________________

Hope this helps!

       Best wishes!

____________________________________________

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Elan Coil [88]

Answer:

a

Explanation:

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2 years ago
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Lead (Pb) is used to make a number of different alloys. What is the mass of lead present in an alloy containing 0.15 mol of lead
Vesna [10]
Lead is 207.2 g/mol.
0.15 mol (\frac{207.2g}{mol}) = 31.08 g Pb
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5 0
2 years ago
The alkali earth metal beryllium (Be) engages in a chemical reaction and loses all of its valence electrons.
denpristay [2]

The loss of electron from an results in the formation of cation represented by the positive charge on the element whereas gaining of electron results in the formation of anion represented by the negative charge on the element.

The alkali earth metal beryllium (Be) belongs to the second group of the periodic table. The ground state electronic configuration of Be is:1s^{2}2s^{2}

From the electronic configuration it is clear that it has 2 valence electrons in its valence shell (2s^{2}).

After losing all valence electrons that is 2 electrons from 2s orbital. The electronic configuration will be:

1s^{2}2s^{0}

Since, lose of electron is represented by positive charge on the element symbol. So, the beryllium will have +2 charge on its symbol as Be^{2+}.

Hence, beryllium will have 2+ charge on it after losing all its valence electrons in the chemical reaction.

6 0
3 years ago
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While heating up a 25 gram sample of concrete (specific heat = 0.210-cal/g°C), your initial tempărature is room temperature (25°
Lana71 [14]

Answer:

Final temperature  = 83.1 °C

Explanation:

Given data:

Mass of concrete = 25 g

Specific heat capacity = 0.210 cal/g. °C

Initial temperature = 25°C

Calories gain = 305 cal

Final temperature = ?

Solution:

Q = m. c. ΔT

Q = amount of heat absorbed or released

m = mass of given substance

c = specific heat capacity of substance

ΔT = change in temperature

ΔT = T2 - T1

305 cal = 25 g ×0.210 cal/g.°C × T2 -  25°C

305 cal = 5.25cal/°C × T2 -  25°C

305 cal / 5.25cal/°C = T2 -  25°C

58.1 °C = T2 -  25°C

T2 = 58.1 °C + 25°C

T2 = 83.1 °C

7 0
2 years ago
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