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
tekilochka [14]
3 years ago
14

What is an element?​

Chemistry
2 answers:
nadya68 [22]3 years ago
8 0
Answer:
Each of more than one hundred substances that cannot be chemically interconverted or broken down into simpler substances and primary constituents of matter are called element. Each element is distinguished by its atomic number, i.e. the number of protons in the nuclei of its atoms.

Hope it helps u!
Andrews [41]3 years ago
5 0

Answer:

An element is a pure substance that cannot be converted further into anything simpler than itself by physical or chemical process

You might be interested in
HELP ITS OVER DUE AND GRADE BOOK ENDS MARCH 5TH
Ymorist [56]
Mutualism- both organisms benefit
Commensalism- one organism benefits while the other neither is harmed or helped
Parasitism- one organism is benefited while the other is harmed

4 P (flea benefits but dog is harmed)
5 M (both get to eat the honey)
6 C (bird gets a place to live without harming or helping the tree)
7 P (lice get a place to live but humans are harmed)
8 M (both are helped)
9 C (flower isn’t harmed or helped but bee is helped)
10 P (the tree is harmed but the mistletoe is benefitted)
4 0
3 years ago
Which is a chacteristic of a solution?
Setler [38]

Answer:

A solution is a homogeneous mixture of two or more substances. The particles of solute in a solution cannot be seen by the naked eye. A solution does not allow beams of light to scatter.

Explanation:

8 0
4 years ago
Describe the ways you can know that a chemical reaction has occurred.
Bad White [126]
Signs that a chemical reaction is occurring are: 1. change in color 2. change in odor 3. change in pH, as in changes from acid to base or base to acid
8 0
4 years ago
Read 2 more answers
The equilibrium 2NO(g)+Cl2(g)⇌2NOCl(g) is established at 500 K. An equilibrium mixture of the three gases has partial pressures
QveST [7]

<u>Answer:</u>

<u>For A:</u> The K_p for the given reaction is 4.0\times 10^1

<u>For B:</u> The K_c for the given reaction is 1642.

<u>Explanation:</u>

The given chemical reaction follows:

2NO(g)+Cl_2(g)\rightleftharpoons 2NOCl(g)

  • <u>For A:</u>

The expression of K_p for the above reaction follows:

K_p=\frac{(p_{NOCl})^2}{(p_{NO})^2\times p_{Cl_2}}

We are given:

p_{NOCl}=0.24 atm\\p_{NO}=9.10\times 10^{-2}atm=0.0910atm\\p_{Cl_2}=0.174atm

Putting values in above equation, we get:

K_p=\frac{(0.24)^2}{(0.0910)^2\times 0.174}\\\\K_p=4.0\times 10^1

Hence, the K_p for the given reaction is 4.0\times 10^1

  • <u>For B:</u>

Relation of K_p with K_c is given by the formula:

K_p=K_c(RT)^{\Delta ng}

where,

K_p = equilibrium constant in terms of partial pressure = 4.0\times 10^1

K_c = equilibrium constant in terms of concentration = ?

R = Gas constant = 0.0821\text{ L atm }mol^{-1}K^{-1}

T = temperature = 500 K

\Delta ng = change in number of moles of gas particles = n_{products}-n_{reactants}=2-3=-1

Putting values in above equation, we get:

4.0\times 10^1=K_c\times (0.0821\times 500)^{-1}\\\\K_c=\frac{4.0\times 10^1}{(0.0821\times 500)^{-1})}=1642

Hence, the K_c for the given reaction is 1642.

7 0
3 years ago
Hey ignore ths i didn mean to post
Sauron [17]

Answer:

WHYYYYYYYYYYYYYYYYYYYYYYY

Explanation:

you said you didnt mean to post it but still typed it and posted it LOLLLLLLLLLLLLLL

7 0
2 years ago
Other questions:
  • How is a satellite affected by the earths gravity ?
    11·2 answers
  • Which is the MOST accurate description of diffusion of materials through the cell membrane in order to maintain homeostasis?
    11·2 answers
  • Ammonium phosphate is an important ingredient in many solid fertilizers. It can be made by reacting aqueous phosphoric acid with
    12·1 answer
  • which contains the most amount of energy a glass of water at 20C or a glass of water at 80C. EXPLAIN ANSWER
    11·1 answer
  • What element has the same valence electrons as carbon A) N B) AI C) Si or D) Be
    9·1 answer
  • What is the ratio of molecules in the chemical equation below N2+3N2-&gt; 2NH3
    14·1 answer
  • What does flooding usually results from?
    5·2 answers
  • If something is broken into pieces will it weight more or less
    8·2 answers
  • sodium reacts with chlorine gas to form sodium chloride. if you have 60 L of chlorine gas at STP and 30 g of sodium, how many gr
    9·1 answer
  • The energy of a photon is 4.23 x 10-17 J. What is the wavelength of the radiation?
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!