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
kvv77 [185]
3 years ago
8

Khjgjhgfmhgxfhkugfdnhmvngchnvnhvhgh

Chemistry
2 answers:
igor_vitrenko [27]3 years ago
5 0

Answer:

I don’t know

Explanation:

bazaltina [42]3 years ago
4 0

Answer: fish are ghosts

Explanation:

Water, space, oxygen. What do they have in common? What do they have that is unique to themselves? One must ponder life’s hidden truths in order to gain true and pure enlightenment.

You might be interested in
How did dmitri mendeleev arrange the periodic table.
worty [1.4K]

Answer:

order of increasing relative atomic mass

3 0
2 years ago
30,000 J of heat are added to 23.0 kg of steel to reach a final temperature of 140
kolbaska11 [484]

The initial temperature is 137.34 °C.

<u>Explanation:</u>

As the specific heat formula says that the heat energy required is directly proportional to the mass and change in temperature of the system.

Q = mcΔT

So, here the mass m is given as 23 kg, the specific heat of steel is given as c = 490 J/kg°C and the initial temperature is required to find with the final temperature being 140 °C. Also the heat energy required is 30,000 J.

ΔT =\frac{Q}{mc}

ΔT =\frac{30000}{23 \times 490} = \frac{30000}{11270} =2.66

Since the difference in temperature is 2.66, then the initial temperature will be

Final temperature - Initial temperature = Change in temperature

140-Initial temperature = 2.66

Initial temperature = 140-2.66 = 137.34 °C

Thus, the initial temperature is 137.34 °C.

7 0
3 years ago
Green (Gg) Is crossed with a yellow pea plant (Gg )
Kobotan [32]
GG | Gg
-----------
Gg | gg
5 0
3 years ago
Read 2 more answers
What is the half-life of 20 g of a radioactive sample if 5 g remain after 8 minutes?
Anni [7]

Hello!

The half-life is the time of half-disintegration, it is the time in which half of the atoms of an isotope disintegrate.

We have the following data:

mo (initial mass) = 20 g

m (final mass after time T) = 5 g

x (number of periods elapsed) = ?

P (Half-life) = ? (in minutes)

T (Elapsed time for sample reduction) = 8 minutes

Let's find the number of periods elapsed (x), let us see:

m =  \dfrac{m_o}{2^x}

5 =  \dfrac{20}{2^x}

2^x = \dfrac{20}{5}

2^x = 4

2^x = 2^2

\boxed{x = 2}


Now, let's find the half-life (P) of the radioactive sample, let's see:

T = x*P

8 = 2*P

2\:P = 8

P = \dfrac{8}{2}

\boxed{\boxed{P = 4\:minutes}}\Longleftarrow(Half-Life)\end{array}}\qquad\checkmark

I Hope this helps, greetings ... DexteR! =)

5 0
3 years ago
Which atom is most likely to accept electrons to form an ionic bond?
Alinara [238K]
Halogens (atoms with 7 valence electrons) and Hydrogen

or generally, atoms with their shells almost full
5 0
3 years ago
Other questions:
  • Please help me will reward Brainly
    8·2 answers
  • How many moles of aluminum oxide are formed from 10.3 moles of Aluminum?
    11·1 answer
  • Definition: This is an important principle of the scientific method in which an experiment can accurately be reproduced by an in
    11·1 answer
  • The energy change, ∆H, associated with the following reaction is +81 kJ. NBr3(g) + 3 H2O(g) → 3 HOBr(g) + NH3(g) What is the exp
    11·1 answer
  • If you had a substance that water will not dissolve, then which of the following compounds would you choose to dissolve this sub
    13·1 answer
  • Pls Help!!!
    11·2 answers
  • Please help
    9·2 answers
  • An aqueous solution of calcium hydroxide is standardized by titration with a 0.183 M solution of hydrochloric acid. If 16.6 mL o
    8·2 answers
  • The upper part of the mantle is <br> Hard<br> OR<br> Soft
    5·1 answer
  • AgNO3 is a useful chemical that has many applications and can undergo a variety of reactions. In the following examples, balance
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!