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True [87]
3 years ago
10

When the tide is receding (high tide to low tide) through a narrow area it can pull a large amount of water through a narrow gap

, this is called a ...
Chemistry
1 answer:
Ganezh [65]3 years ago
8 0
It’s called a rip current.
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Ionic compounds and metals usually form what kind of solid
natka813 [3]

Answer:

crystalline

Explanation:

Ionic compounds and metals form crystals.

4 0
3 years ago
Why is Cl weaker base
Helen [10]
Because cl atoms are bonded with hydrogen. hydrogen bond is very strong bond
6 0
3 years ago
What is the hydroxide ion concentration in an aqueous solution with a hydrogen ion concentration of
Schach [20]
[H+][OH-] = 1x10-14 = Kw (Memorize this relationship)
(2.70x10-2)[OH-] = 1x10-14
[OH-] = 1x10-14/2.70x10-2
[OH-] = 3.70x10-13 M (assuming you ignore the autoionization of H2O)
7 0
3 years ago
Please please please please help
Pavel [41]

Answer:

Atomic #: 82

Mass #: 206

Charge: 4+

# of protons: 82

# of electrons: 78

# of neutrons: 124

Explanation:

Atomic #: look at the bottom left #, it's always the atomic #.

Mass #: look at the top left # it's always the mass #.

Charge: they give you the charge which is shown on the upper right of the element.

# of protons: is the atomic #

# of electrons: also the atomic # minus 4 bc the charge is a positive 4, indicating that some electrons 'left'.

# of neutrons: 206 (mass # is protons + neutrons) minus 82 (atomic#) which is 124.

6 0
3 years ago
A weather balloon is released in Houston when the pressure is 758.0 mmHg and 32.7°C. After the balloon reaches an altitude of 60
erica [24]

Answer:

See explanation

Explanation:

From the information provided;

P1 = initial pressure = 758.0 mmHg

T1 = Initial temperature = 32.7°C + 273 = 305.7 K

V1 = Initial volume?

P2 = Final pressure = 364.2 mmHg

V2 = Final volume =  425 L

T2= Final Temperature = 3.10°C + 273 = 276.1 K

P1V1/T1 = P2V2/T2

P1V1T2 =P2V2T1

V1 = P2V2T1/P1T2

V1 = 364.2 * 425 * 305.7/758.0 * 276.1

V1 = 226. 18 L

B) Total pressure = 100.0 kPa

Pressure of Helium = 83.1 kPa

Pressure of carbon dioxide = 0.1000 kPa

Pressure of  oxygen ?

From Dalton's law of partial pressures;

PT = P1 + P2 +P3 +.........

Hence;

Poxygen = 100.0 kPa - (83.1 kPa + 0.1000 kPa)

Poxygen = 16.8 kPa

4 0
3 years ago
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