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mote1985 [20]
4 years ago
7

Scientists decide that in an experiment on fish, all the fish will be fed the same amount of food

Chemistry
1 answer:
Liula [17]4 years ago
4 0
This is a controlled variable
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Which of the following is not part of Dalton's atomic theory?
lakkis [162]
I think its A because some scientist from the Department of Physics of Northeastern University found out that is not a part of Dalton's atomic theory.
3 0
4 years ago
A gas has a volume of 20.0 L at a pressure of 950 mmHg with a temperature of 125.0 o If the conditions are changed to STP, what
ehidna [41]
Use formula: Initial Pressure x Initial Volume/Initial temperature = Final pressure x Final Volume/Final Temperature => 17.15L

6 0
3 years ago
Research help?
prisoha [69]

Answer:

They tenderize the product by coating and weakening the gluten bonds within the structure.

Even though they contain little or no moisture, they provide the illusion of wetness. ...

They enable browning.

They help move heat through the product, perpetuating the baking process.

Explanation:

4 0
3 years ago
What electrons in an atom take part in chemical bonding, and what are they called
nignag [31]

Explanation:

The electrons in the outermost electron shell are responsible for forming chemical bonds. These electrons are also known as valence electrons

4 0
3 years ago
Calculate the root mean square velocity of nitrogen molecules at 25°c. a) 729 m/s b) 515 m/s c) 149 m/s d) 297 m/s
Elena L [17]

Answer:

root mean square velocity of nitrogen at 25°c is 515 m/s

correct option is b) 515 m/s

Explanation:

given data

temperature = 25°c = 25 + 273 = 298 K

to find out

root mean square velocity of nitrogen molecules

solution

we know that root mean square velocity of gas is Vrms = \sqrt{\frac{3RT}{M}}      .......................1

mass of gas = M

universal gas constant = R

temperature = T

and we know mass of nitrogen = 28 g = 28 × 10^{-3} kg

Vrms = \sqrt{\frac{3RT}{M}}

Vrms = \sqrt{\frac{3(8.314)298}{28*10^{-3}}}

Vrms = 515.22 m/s

root mean square velocity of nitrogen at 25°c is 515 m/s

correct option is b) 515 m/s

3 0
3 years ago
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