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
ira [324]
2 years ago
9

Please help me I will give you the brain thing and extra points. image below part

Chemistry
2 answers:
Sholpan [36]2 years ago
4 0

Answer:

The answer is D, when H2S gas is bubbled into a lead acetate soulution, a precipitate forms

Explanation:

This is because a physical change is when it changes but doesn't turn into a new substance. A chemical change is when it transforms into a completly new substance.  Hope this helps!!! :)

jekas [21]2 years ago
3 0
D is the correct answer... if u need in depth let me know
You might be interested in
If an atom has 35 protons in the nucleus, how many will it have orbiting nucleus
yan [13]
It will have 35 ''electrons'' . Basically the number of protons in the nucleus of an atom is always equal to the number of electrons but its just that protons are positively charged and electrons are negatively charged.  <span />
8 0
3 years ago
You mix two clear liquids and a colored solid forms at the bottom of the beaker. Do you think this is a chemical change? How can
UkoKoshka [18]
The answer is yes. A chemical change occurred.
Chemical change is defined as the rearrangement or alteration in the of atoms in one or more substance which result in the formation of a new substance.

In the above, you mixed two clear liquids and the result was a new substance which is a colored solid precipitate at the bottom of the beaker.
This means that changes in the atoms of the two clear liquids occurred leading to the formation of this new solid substance.

This means that chemical change has occurred.

Hope this helps :)
7 0
3 years ago
Pls hurrry<br>what are greenhouse effect 1 paragraph and come friends
Kay [80]
The greenhouse effect is a natural process that warms the Earth’s surface. When the Sun’s energy reaches the Earth’s atmosphere, some of it is reflected back to space and the rest is absorbed and re-radiated by greenhouse gases.
Greenhouse gases include water vapour, carbon dioxide, methane, nitrous oxide, ozone and some artificial chemicals such as chlorofluorocarbons (CFCs).
The absorbed energy warms the atmosphere and the surface of the Earth. This process maintains the Earth’s temperature at around 33 degrees Celsius warmer than it would otherwise be, allowing life on Earth to exist.


hope it helps you
follow for more………………………>_<
8 0
2 years ago
How many moles of chloride ions are there in 2.5 L of 5 M magnesium chloride?
castortr0y [4]

Answer:

n_{Cl^-}=25molCl^-

Explanation:

Hello,

In this case, since the given 5-M concentration of magnesium chloride is expressed as:

5\frac{molMgCl_2}{L}

We can notice that one mole of salt contains two moles of chloride ions as the subscript of chlorine is two, in such a way, with the volume of solution we obtain the moles of chloride ions as shown below:

n_{Cl^-}=5\frac{molMgCl_2}{L}*\frac{2molCl^-}{1molMgCl_2} *2.5L\\\\n_{Cl^-}=25molCl^-

Best regards.

4 0
2 years ago
Which substances in the diagram are most unstable? positive values of enthalpy negative values of enthalpy negative values -50 t
NemiM [27]

Answer:

no  s e

Explanation:

tampocose

8 0
3 years ago
Read 2 more answers
Other questions:
  • Why is it important to learn about fuels and gases?
    14·1 answer
  • 1.) Which of the following is an example of using creativity while doing background research?
    15·1 answer
  • A certain weak acid, HA, has a Ka value of 2.6×10−7. Calculate the percent ionization of HA in a 0.10 M solution.
    10·1 answer
  • What is the mass of 2.40 moles of magnesium chloride, mgcl2
    11·1 answer
  • The climate of the continental United States is generally
    12·1 answer
  • The age of the solar system is estimated by the dating of rocks.<br><br> True or False
    10·2 answers
  • This is a steel penny from 1943. A steel penny will weigh 2.72 g and is
    15·1 answer
  • Pablo wants to enter the science fair. Which question could be answered through scientific investigation?
    7·2 answers
  • Both a siren passing by and radar exhibit the Doppler effect. What is the main
    14·2 answers
  • 7. A gas-filled weather balloon with a volume of 65.0 L is released at sea-level conditions of
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!