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yawa3891 [41]
3 years ago
9

A scientific experiment must be

Chemistry
1 answer:
Blababa [14]3 years ago
6 0
Repeatable

If it’s repeatable and you get the same answer constantly then it’s a good and accurate experiment
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Area immediately surrounding a hazardous material incident which extends far enough to protect personnel outside the zone from c
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Protective Action Zone is the range instantly neighboring and downwind from the underlying seclusion zone; this zone is in inevitable risk of being defiled via airborne vapors inside 30 minutes of material discharge. Physically securing and keeping up the crisis scene by building up borders and defensive activity zones and denying section to unapproved people.
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3 years ago
Water ionizes because: Select one: The smaller electronegative oxygen atom strips the electron from one of its hydrogen atoms, l
Ivahew [28]

Answer:

The larger electronegative oxygen atom strips the electron from one of its hydrogen atoms, leaving the proton to dissociate.

Explanation:

Water is a molecule composed of hydrogen and oxygen atoms that forms a covalent bond i.e. share electrons. However, due to the fact that the oxygen atom in a water molecule is more electronegative than the hydrogen molecule, it tends to draw electrons towards itself, leaving the hydrogen atom more positive. This causes the POLARITY of water.

To ionize means for the atoms of a compound to dissociate into electrically charged ions (positive and negative) in an aqeous solution. Water is able to ionize because the more electronegative oxygen atom draws the electron from one of its hydrogen atoms, leaving the proton (H+) to dissociate.

8 0
3 years ago
At 35°C and 2 atm of pressure, the volume of gas is 200 ml. If the temperature changes to
lys-0071 [83]

Answer:

V₂ = 106.5 mL

Explanation:

Given data:

Initial volume =200 mL

Initial pressure = 2 atm

Initial temperature = 35 °C (35 +273 = 308 K)

Final temperature = 55°C (55+273 = 328 K)

Final volume = ?

Final pressure = 4 atm

Formula:  

P₁V₁/T₁ = P₂V₂/T₂  

P₁ = Initial pressure

V₁ = Initial volume

T₁ = Initial temperature

P₂ = Final pressure

V₂ = Final volume

T₂ = Final temperature

Solution:

V₂ = P₁V₁ T₂/ T₁ P₂  

V₂ = 2 atm ×200 mL × 328 K / 308 K ×4 atm

V₂ = 131200 atm .mL. K / 1232 K.atm

V₂ = 106.5 mL

6 0
3 years ago
PLEASE HELP
Virty [35]

Answer:

I think the answer is D.coral reef, neritic zone

Explanation:

8 0
3 years ago
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Using the information on page 508, describe a way to make a universal indicator that would tell you the ph of a solution between
vovikov84 [41]

pH stands for the power of hydrogen. pH that ranges form 1-6.9 are acid substances. At pH 1 - 2.9, the substance is highly acidic which will have the color from red to red - orange. At pH 3 - 4, the substance is mildly acidic and the color range is from red - orange to orange. At pH 4.1 – 6.9, the substance is weakly acidic and the color range is from orange to yellow. At pH 7, it is neutral and it is green in color. At pH 7.1-14, it is basic. At pH 7.1 - 10.9, the substance is weakly basic the color range is from green to blue. At pH 11 - 13, the substance is mildly basic and the color range is from blue to purple. At pH 13.1 – 14, the substance is highly basic and the color range is from purple to light purple.

8 0
3 years ago
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