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DerKrebs [107]
3 years ago
14

What are the group names call on the perotic table

Chemistry
1 answer:
Margaret [11]3 years ago
6 0
I thinks its alkali, halogens,and noble gas
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Which response includes all the following processes that are accompanied by an increase in entropy? 1) 2SO 2(g) + O 2(g) → SO 3(
Mashutka [201]

Answer: Reaction (1) , (3) and (4) are accompanied by an increase in entropy.

Explanation:

Entropy is the measure of randomness or disorder of a system. If a system moves from  an ordered arrangement to a disordered arrangement, the entropy is said to decrease and vice versa.

(1) 2SO_2(g)+O_2(g)\rightarrow SO_3(g)

3 moles of reactant are changing to 1 mole of product , thus the randomness is increasing. Thus the entropy also increases.

2) H_2O(l)\rightarrow H_2O(s)

1 mole of Liquid reactant is changing to 1 mole of solid product , thus the randomness is decreasing. Thus the entropy also decreases.

3) Br_2(l)\rightarrow Br_2(g)

1 mole of Liquid reactant is changing to 1 mole of gaseous product , thus the randomness is increasing. Thus the entropy also increases.

4)  H_2O_2(l)\rightarrow H_2O(l)+\frac{1}{2}O_2(g)

1 mole of Liquid reactant is changing to half mole of gaseous product and 1 mole of liquid product, thus the randomness is increasing. Thus the entropy also increases.

4 0
3 years ago
A chemistry teacher has a 560-cm length of magnesium ribbon. For a class experiment, each student requires an 8.5-cm length of t
Ugo [173]
N=560/8.5=65.88

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Horatio found a plant growing on the ground along a stream. An image of the plant is shown. What kind of plant did Horatio find?
Korolek [52]

Answer:

nonvascular because it lacks stems

Explanation:

Non-vascular plants, or bryophytes, are almost the most primitive forms of land vegetation. They lack the vascular tissue system (xylem and phloem) needed for transporting water and nutrients. Unlike angiosperms, non-vascular plants do not produce flowers, fruit, or seeds. They also lack true leaves, roots, and stems. Non-vascular plants are usually small, green mats of vegetation found in damp (wet) habitats. The lack of vascular tissue means that such plants must remain around moist environments.Just like other plants, non-vascular plants exhibit alternation of generations and cycle between sexual and asexual reproductive phases. The three main divisions of bryophytes are: Bryophyta (mosses), Hapatophyta (liverworts), and Anthocerotophyta (hornworts).

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What's a physical property that describes how something feels
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Some physical property's that describe how something feels is texture. 
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3 years ago
Please help, <br> How could you tell a Ca(NO3)2 solution from a Zn(NO3)2 solution?
tensa zangetsu [6.8K]

Answer:

Anhydrous calcium nitrate reaction with water is highly endothermic

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