1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
QveST [7]
4 years ago
5

How are elements and compounds different?​

Chemistry
1 answer:
Black_prince [1.1K]4 years ago
7 0

Answer:

A compound contains atoms of different elements chemically combined together in a fixed ratio. An element is a pure chemical substance made of same type of atom.

Explanation:

You might be interested in
Draw the compound that would produce 4-ethyl-3-hexanol in the presence of a nickel catalyst and hydrogen.
MatroZZZ [7]
In organic chemistry, there are already known reaction for synthesis that have been studied and experimented by scientists. For reactions involving a Nickel catalyst in the presence of hydrogen gas, the reaction would be hydrogenation of alkene to yield an alcohol. These reaction is anti-Markovnikov, or proceeds by violating the rule of Markovnikov. His rule states that 'the rich gets richer'. This means that the heavily substituted C atom of the alkene chain would receive another substituent. Therefore, the complete reaction would be

4-ethyl-3-hexene   ------->  4-ethyl-3-hexanol

In structural formula, the reaction goes as follows as shown in the picture.

5 0
3 years ago
Read 2 more answers
xavier, yaozhou and zara had some beads. xavier and yaozhou had total of 438 beads. xavier and zara had total of 204 beads. youz
SVEN [57.7K]
To solve this problem, we need to set-up algebraic expression. First, use variables to represent the number of beads. 

Let: x = number of Xavier's beads
       y = number of Y<span>aozhou's beads
       z = number of Zara's beads

</span>It is important to note that since we have three unknowns, we should also have three independent equations. <span>Based on the given statements, we have the following three equations:

(1) x + y = 438
(2) x + z = 204
(3) y = 3z

Substitute y in terms of z in equation (1). Then multiply equation (2) with -1. 

x + 3z = 438
-(x + z = 204)
-------------------
      2z = 234
        z = 117

From equation (3),

y = 3(117) = 351

Using equation (1),

x = 438 - 351 = 87

Thus, Xavier had 87 beads.</span>
5 0
3 years ago
Write the acid-base reaction where hydrogen carbonate is the acid and water is the base.
koban [17]
HI

I found a link that will direct you to the answer of this questions
<span>http://click.dji.com/ANbvbbP7bwUWtSACp6U_?pm=link&as=0004</span>
6 0
3 years ago
A weight loss supplement is advertised in several popular beauty and fashion magazines. The advertisements claim that "the suppl
Zepler [3.9K]
The answer is d. I think
3 0
3 years ago
Read 2 more answers
Chlorine has two natural isotopes: Cl-37 and Cl-35. Hydrogen reacts with chlorine to form the compound HCl. Would a given amount
jolli1 [7]

Answer: Yes, a given amount of Hydrogen would react with different masses of the two isotopes of chlorine, and no, this does <em>not</em> conflict with the Law of Definite proportions

Explanation:

About 76% percent of Cl is found in the Cl-35 isotope, and about  24% in the Cl.37 isotope. that means that about 24% of Cl nuclei have 2 more neutrons than the average Cl nucleus.

So, if H_2 reacts with Cl_2, 76% of the Hydrogen that reacted will react with Cl-35, and the rest will react with Cl-37. Why does this not conflict with the law of definite proportions? Because each Hydrogen atom ends up paired to a single Chlorine atom! Moreover, the proportion of Cl-35 to Cl-37 remains constant in all samples of Chlorine that are naturally found, thus we will always find the same proportion of Chlorine to Hydrogen in any HCl sample we come across.  Thus the weight of a mol of Cl will always be 35*0.76+37*0.24=35.48 or 35.45 if we had done this calculation with more significant digits.

Therefore 1 mol of H_2 (2 grams) will always react with 1 mol of Cl_2 (35.45g*2=70.9 grams), and this is a definite proportion.

5 0
4 years ago
Other questions:
  • What kind of rays has the highest amount of energy in the EM spectrum?
    12·2 answers
  • . On the periodic table, the atomic mass of oxygen is listed as 15.9994 amu.. Based on this, one can deduce that the most common
    12·1 answer
  • Copper has an atomic number of 29. that means that there are 29 protons in the nucleus of each copper atom. That's what the atom
    13·1 answer
  • What's the capacity of 2 liter bottle
    8·2 answers
  • A sample of gas at 25°C has a volume of 11 L and exerts a pressure of 0.868 atm. How many moles
    10·1 answer
  • A container holds 20.0 grams of neon gas. Under the same conditions, how many grams of xenon would the container hold?
    11·2 answers
  • Write a caption for a photo of a polluted city.​
    5·1 answer
  • Question 39 (1 point)<br> What chemical family is helium in?
    7·2 answers
  • Do your structures resemble the following?<br> H-C=C-H
    7·1 answer
  • Can someone please help me please?
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!