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
mash [69]
3 years ago
15

A what is matter that is always composed of the same combination of atoms

Chemistry
1 answer:
Bingel [31]3 years ago
7 0

Answer:

A substance

Explanation:

You might be interested in
An arctic weather balloon is filled with 22.6L of helium gas inside a prep shed. The temperature inside the shed is 7°C. The bal
Liono4ka [1.6K]

Answer : The new volume of the balloon is, 22.4 L

Explanation :

Charles' Law : It is defined as the volume of gas is directly proportional to the temperature of the gas at constant pressure and number of moles.

V\propto T

or,

\frac{V_1}{V_2}=\frac{T_1}{T_2}

where,

V_1 = initial volume of gas = 22.6 L

V_2 = final volume of gas = ?

T_1 = initial temperature of gas = 7^oC=273+7=280K

T_2 = final temperature of gas = 5^oC=273+5=278K

Now put all the given values in the above formula, we get the final volume of the gas.

\frac{22.6L}{V_2}=\frac{280K}{278K}

V_2=22.4L

Therefore, the new volume of the balloon is, 22.4 L

4 0
4 years ago
Cuanto se demora un clavo en un envase con vinagre en oxidarse?
Alexxandr [17]

Answer:

Verter lentamente partes iguales de vinagre y peróxido de hidrógeno para formar la solución. Mezclar estos dos ingredientes crea una pequeña cantidad de ácido peracético que oxidará el metal en la uña y creará óxido. La solución debe empezar a inflamarse y ponerse roja en los próximos cinco minutos.

Explanation:

6 0
3 years ago
A particular chemical reaction absorbs energy. It is possible to say the reactants possessed a lower energy than the products. T
Harrizon [31]

i'm pretty sure its true
5 0
3 years ago
Read 2 more answers
An acid with molar mass 84.48 g/mol is titrated with 0.650 M KOH. What volume of KOH solution is needed to titrate 1.70 grams of
RSB [31]

Answer:

V=0.0310L=3.10mL

Explanation:

Hello.

In this case, since the acid is monoprotic and the KOH has one hydroxyl ion only, we can see that at the equivalence point the moles of both of them are the same:

n_{acid}=n_{KOH}

Thus, since we are given 1.70 g of the acid, we compute the moles of acid that were titrated:

n_{acid}=1.70g*\frac{1mol}{84.48g}=0.0201mol

Which equal the moles of KOH. In such a way, since the molarity is defined as moles over liters (M=n/V), the liters are moles over molarity (V=n/M), thus, the resulting volume is:

V=\frac{0.0201mol}{0.650mol/L}\\\\V=0.0310L=3.10mL

Best regards!

7 0
3 years ago
How are the Sun and Moon different? Compare and contrast these celestial bodies
iragen [17]
The sun is a luminous object while the moon is a non luminous object it only reflect the light from the sun... It takes 8.5 minutes for the light coming form the sun to reach the earth, it takes 1.3light seconds for the moon to reflect the light coming from the sun to the earth... The sun is a star while the moon is a satellite both the sun and the moon are round in shape... The sun has an outer temperature of about 6000°C while there is no breeze in the moon...


Comment for more....
7 0
4 years ago
Other questions:
  • Which of the following processes is exothermic?
    10·2 answers
  • If 20.0 ml of glacial acetic acid (pure hc2h3o2) is diluted to 1.40 l with water, what is the ph of the resulting solution? the
    10·1 answer
  • The identities of substances are the same before and after which type of change
    13·1 answer
  • True or false certain cations are associated with either exotermic or endothermic processes
    7·1 answer
  • Give the formula of a reagent which will form a
    9·1 answer
  • The hormone adrenaline can affect only cells with
    15·1 answer
  • An object in motion will stay in motion unless acted upon by what type of force?
    6·2 answers
  • If you made a three-dimensional model of an atom and its nucleus, how would you represent the atom? 7th grade
    11·1 answer
  • Which of the following is an example of the characteristic of movement?
    14·1 answer
  • ¿que estudia la química?
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!