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Ulleksa [173]
3 years ago
5

What do scientist use to measure the volume of a substance

Chemistry
2 answers:
jekas [21]3 years ago
7 0
Scientist use density to measure how much stuff is in a specified volume of a substance
natali 33 [55]3 years ago
3 0
Scientists use a Graduated Cylinder
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Which expression represents a reaction rate?a. time/massc. energy/timeb. number/timed. time/energy
Kitty [74]
The right answer for the question that is being asked and shown above is that: "<span>b. number/timed." Reaction Rate refers to the </span> speed of reaction<span> for a reactant or product in a particular </span>reaction<span> is intuitively defined as how fast or slow a</span>re action<span> takes place.</span>
4 0
3 years ago
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An atom that contains 22 protons,
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Answer: 45

Explanation:

Recall that mass number = number of protons + number of neutrons. Hence, the mass number of the atom

= 22 + 23

= 45

Furthermore, the atomic number is equal to the number of protons. Hence, since the number of protons is 22. the atom has an atomic number of 22

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3 years ago
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Which of the following is not conserved in a chemical reaction?
mixer [17]
Mass is not conserved in chemical reactions. Mass is therefore never conserved because a little of it turns into energy in every reaction
6 0
2 years ago
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Un buzo que nada en las profundidades despide pequeñas burbujas de aire¿Aumenta disminuye o permanece igual el tamaño de las bur
alekssr [168]

Answer:

Al ascender las burbujas van aumentando de tamaño.

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Las burbujas que produce el buzo debajo del agua son pequeñas moléculas de dióxido de carbono gaseoso producto de la respiración del mismo.

Ahora, a medida que las burbujas suben a la superficie, la presión que sufren estas (Presión debido al agua), es menor conforme van ascendiendo debido a la ley de Boyle: A medida que la presión aumenta, el volumen va disminuyendo.

Esto significa que al ascender las burbujas van aumentando de tamaño debido a que la presión que sufren estas es menor que cuando están a mayores profundidades.

5 0
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What substance does a tree use for food
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