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Rina8888 [55]
3 years ago
11

In order to model a chemical change in the laboratory, a student wants to select the appropriate measuring apparatus to record t

he reaction. Which apparatus could be used to detect that a chemical change occurred with a substance in a laboratory setting? Select ALL that apply.
A) The student could use a hand lens to see if the original substance had been crushed into smaller particles.
B) The student could perform an odor test to detect if a new smell emerges from the interaction of the substance in the lab.
C) The student could test whether gas was released during the interaction of the substance with another substance in the lab.
D) The student could use a spatula to determine if a precipitate/solid formed at the bottom of the beaker containing the substance. Eliminate E) The student could use a balance and a volumetric flask to determine the mass and volume of the substance in order to determine its density.
Chemistry
1 answer:
RoseWind [281]3 years ago
7 0

Answer:

b,c,d

Explanation:

bc i got it right

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marusya05 [52]

Answer:

Nucleus.

Explanation:

The sponge is a multicellular organism that consists of pores that allows water to move through the body. Sponges belong to the kingdom Animalia and phylum Porifera. Sponges can reproduce by budding. Sponges are placed in kingdom Animalia because they are unable to make their own food, made of more than one cell, and absence of cell wall.

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2 years ago
Substance A and B are chemically exactly the same. The molecules in substance A move much faster and are less ordered than the m
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substance A is a liquid, while substance B is a liquid or gas

7 0
2 years ago
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Which two cell components deal with the same kind of chemical substance ( lipid, protein, enzyme, and so on)
geniusboy [140]

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Cell membrane and cytoplasm

Explanation:

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6 0
3 years ago
1) A common experiment to determine the relative reactivity of metallic elements is to place a pure sample of one metal into an
Annette [7]

Answer: Zn(s)+CuSO_4(aq)\rightarrow ZnSO_4+Cu

Explanation:-

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As zinc is more reactive than copper, it could easily displace copper from its aqueous solution and thus leads to formation of zinc (II) sulfate and pure copper.

The chemical reaction can be represented as :

Zn(s)+CuSO_4(aq)\rightarrow ZnSO_4+Cu

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7 0
3 years ago
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How many seconds would it take to deposit 17.3 g of ag (atomic mass = 107.87) from a solution of agno3 using a current of 10.00
Brums [2.3K]
Data Given:

Time = t = ?

Current = I = 10 A

Faradays Constant = F = 96500

Chemical equivalent = e = 107.86/1 = 107.86 g

Amount Deposited = W = 17.3 g

Solution:
             According to Faraday's Law,

                                          W  =  I t e / F

Solving for t,

                                          t  =  W F / I e
Putting values,
                                          t  =  (17.3 g × 96500) ÷ (10 A × 107.86 g)

                                          t  =  1547.79 s

                                          t  = 1.54 × 10³ s
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2 years ago
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