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Dmitrij [34]
3 years ago
15

Some freshwater reservoir

Chemistry
1 answer:
olya-2409 [2.1K]3 years ago
8 0

what is full answer I sont get it

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Which term names a metamorphic change in rocks over a wide area from tectonic forces in Earth's crust and mantle? A. local metam
Pavlova-9 [17]
D is the answer. A, B,C are absurd. Doing a little word right there.
8 0
3 years ago
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What solution can you add to of the mixture of NH4 (aq) and Ca2 (aq) to precipitate one cation while keeping the other cation in
vekshin1

Answer:H2SO4

Explanation:calcium forms a precipitate in a sulfide compound of so4

7 0
4 years ago
What carboxylic acid would be formed if the malonic ester synthesis (alkylation of diethyl malonate followed by hydrolysis with
uranmaximum [27]

Answer:

cyclohexilic acid

Explanation:

The malonic ester synthesis is often used to form different types of carboxilic acid. In this case, we have excess of base, so we can expect a ring formed in the molecule.

In the first step, the base substract the more acidic hydrogen of the ester. In the next step we have the ester reacting with the dibromopentane. Then, in the next step, the excess of base will substract again the acidic hydrogen remaining of the carbon, and then, will promove a Sn2 reaction with the bromine in the pentane (That it was previously attached to the molecule). In this step, a ring id formed. Then, the hydrolisis with acid, will form carboxilic acid in both sides of the molecule, and finally the decarboxilation in heat will separate the molecule and formed the cyclohexilic acid.

The picture below shows the mechanism

3 0
4 years ago
Based on the name, which substance is a covalent compound?
Sindrei [870]

Answer:

dinitrogen pentoxide

Explanation:

Based on the research, dinitrogen pentoxide is a chemical compound containing only nitrogen and oxygen which is both nonmetal. When two nonmetals or two negatively charged atoms try to form bonds, they always form covalent bonds. Hence, Dinitrogen Pentoxide is not ionic - it is covalent.

3 0
3 years ago
how many moles of oxygen are needed to burn 1.33 moles of methyl alcohol (ch3oh)?2ch3oh 3o2 2co2 4h2o
dlinn [17]
<span>2 CH3OH + 3 O2 = 2 CO2 + 4 H2O

2 moles CH3OH ---------------- 3 moles O2
1.33 moles CH3OH ----------- ( moles O2)

moles O2 = 1.33 x 3 / 2

moles O2 = 3.99 / 2

= 1.995 moles of O2</span>
3 0
3 years ago
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