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snow_tiger [21]
3 years ago
6

What is wrong with the way that the hypothesis, “Chocolate may cause pimples”, is written?

Chemistry
2 answers:
DaniilM [7]3 years ago
8 0

Answer:

More sweet and cute with the little ones on the surface and a little more

Semenov [28]3 years ago
7 0

Answer:

because chocolate have many pimples on the face

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What two types of matter are closest in<br> density? How do you know?<br> ings.
maks197457 [2]

Answer:

Density: The molecules of a liquid are packed relatively close together. Consequently, liquids are much denser than gases. The density of a liquid is typically about the same as the density of the solid state of the substance.

In a gas, the distance between molecules, whether monatomic or polyatomic, is very large compared with the size of the molecules; thus gases have a low density and are highly compressible. In contrast, the molecules in liquids are very close together, with essentially no empty space between them

I hope it helps you

7 0
3 years ago
Which substance produces hydroxide ions in a solution
Fed [463]

your answer is <u>B. Arrhenius base</u>

6 0
3 years ago
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Sodium chloride reacts with copper sulfate to produce sodium sulfate and copper chloride. mc011-1.jpg This equation represents a
Anarel [89]
This is a double replacement because both Copper and Sodium reacted with each other compounds , hence "double"
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3 years ago
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What is measured by the reaction rate? the probability that a reaction will occur the speed at which products form the time requ
Cloud [144]

Answer: the speed at which products form

Explanation:

Rate of a reaction is defined as the speed at which a chemical reaction proceeds. It is often expressed in terms of the concentration of a reactant that is consumed in a unit time or the concentration of a product that is formed in a unit of time.

For a general reaction :A\rightarrow B

Rate=-\frac{d[A]}{dt}

or Rate=+\frac{d[B]}{dt}

where d[A] = change in concentration of reactant A

d[B] = change in concentration of product B

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5 0
3 years ago
Two 10g blocks, one of copper and one of iron, were heated from 300 K to 400K (a temperature difference of 100 K).
vova2212 [387]

Energy absorbed by Iron block E (iron) = 460.5 J

Energy absorbed by Copper block E (Copper) = 376.8 J

<u>Explanation:</u>

To find the heat absorbed, we can use the formula as,

q = m c ΔT

Here, Mass = m = 10 g = 0.01 kg

ΔT = change in temperature = 400 - 300 = 100 K = 100 - 273 = -173 °C

c = specific heat capacity

c for iron = 460.5 J/kg K

c for copper = 376.8 J/kg K

Plugin the values in the above equation, we will get,

q (iron) = 0.01 kg × 460.5 J/kg K × 100 K

            = 460.5 J

q (copper) = 0.01 kg ×  376.8 J/kg K × 100 K

                 = 376.8 J

3 0
3 years ago
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