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
oee [108]
2 years ago
7

If I change the number of electrons in an atom, it becomes

Chemistry
1 answer:
Sati [7]2 years ago
6 0

Answer: If you change the number of electrons in an atom it will become an ion

Explanation: When you change the number of protons in an atom, you will change the atom from one element to a different element. Sometimes, when you add a proton to an element, the element will become radioactive. If you change the number of electrons in an atom, you will get an ion of the element.

You might be interested in
What can we do to fix the climate in greenland?
Anna35 [415]

Answer:

Greenland is a huge island that is covered with ice, due to warming this ice has begun to melt, reaching a point where more ice is lost per year than is gained.

The temperature levels on earth have increased abnormally since the industrial revolution, that is since CO2 emissions increased. The extra CO2 released into the atmosphere does not allow the heat generated from the earth to be released into space, so the earth has begun to heat up more than normal, causing temperatures to rise.

To avoid this, CO2 emissions should be reduced, this could be achieved by using clean energy to generate electricity, such as solar or wind energy. Also if industries improve their processes to reduce the CO2 they produce. Another way is to reduce livestock farming as this industry also releases high amounts of CO2.

As individuals, from our homes what we can do is to reduce energy consumption if it is generated with fossil fuels, for example turn off the lights if we are not in the rooms, unplug appliances that we are not using, do not use products that come from polluting industries, among others.

8 0
2 years ago
Is a microvilli is a tiny finger like projection that kills bacteria in the lymphatic system? true or false
Alika [10]

Villi are tiny finger like projections present in the inner epithelial lining of the intestine. Each finger like villi is further divided into microvilli, which is the extension of plasma membrane of each epithelial cell of the villi. These villi and microvilli present on the inner surface of the intestine provide a greater surface area and this enhances the digestion and absorption of the nutrients.

Therefore, the correct answer is false as a microvilli is the tiny finger like projection of the inner epithelial cells of the small intestine that has absorptive functions.

5 0
2 years ago
what is the approximate ph at the equivalence point of a weak acid-strong base titration if 25 ml of aqueous formic acid require
vivado [14]

Answer:

pH at equivalence point is 8.52

Explanation:

HCOOH+NaOH\rightarrow HCOO^{-}Na^{+}+H_{2}O

1 mol of HCOOH reacts with 1 mol of NaOH to produce 1 mol of HCOO^{-}

So, moles of NaOH used to reach equivalence point equal to number of moles HCOO^{-} produced at equivalence point.

As density of water is 1g/mL, therefore molarity is equal to molality of an aqueous solution.

So, moles of HCOO^{-} produced = \frac{29.80\times 0.3567}{1000}moles=0.01063moles

Total volume of solution at equivalence point = (25+29.80) mL = 54.80 mL

So, at equivalence point concentration of HCOO^{-} = \frac{0.01063\times 1000}{54.80}M=0.1940M

At equivalence point, pH depends upon hydrolysis of HCOO^{-}. So, we have to construct an ICE table.

HCOO^{-}+H_{2}O\rightleftharpoons HCOOH+OH^{-}

I: 0.1940                                   0                 0

C: -x                                          +x               +x

E: 0.1940-x                                x                  x

So, \frac{[HCOOH][OH^{-}]}{[HCOO^{-}]}=K_{b}(HCOO^{-})=\frac{10^{-14}}{Ka(HCOOH)}

species inside third bracket represent equilibrium concentrations

So, \frac{x^{2}}{0.1940-x}=5.56\times 10^{-11}

or,x^{2}+(5.56\times 10^{-11}\times x)-(1.079\times 10^{-11})=0

So, x=\frac{-(5.56\times 10^{-11})+\sqrt{(5.56\times 10^{-11})^{2}+(4\times 1.079\times 10^{-11})}}{2}

So, x=3.285\times 10^{-6}M

So, pH=14-pOH=14+log[OH^{-}]=14+logx=14+log(3.285\times 10^{-6})=8.52

5 0
2 years ago
Between reaction of magnesium powder and lead oxide which is oxidized in the reaction and which is oxidizing agent
GuDViN [60]

Answer:

Mg is oxidized and Pb is the oxidizing agent

Explanation:

7 0
2 years ago
Which of the following is not an example of potential energy? Group of answer choices electrical energy, chemical energy, gravit
Sholpan [36]

Answer: The one listed below that's NOT an example of potential energy is mechanical energy. Mechanical energy is categorized as a kinetic energy with light, sound, and thermal/heat energy.

HOPE THIS HELPS

6 0
2 years ago
Other questions:
  • The half-life of bismuth is 5 days. How much of a 100 gram sample will remain after 20 days?
    13·1 answer
  • Explain how you determine the number of valence electrons that should be used in the dot structure for silicon dioxide and state
    14·1 answer
  • Why is water not a good extraction solvent for trimyristin?
    5·1 answer
  • A jeweler has five rings, each weighing g, made of an alloy of silver and gold. She decides to melt down the rings and add enoug
    10·1 answer
  • I NEED HELP PLEASE !!!!!
    14·2 answers
  • Which of the following correctly describes the importance of the carbon cycle? to recycle oxygen-based compounds to replenish ni
    7·2 answers
  • 2. What happens to the heat in an exothermic reaction?
    8·1 answer
  • If carbon has 6 neutrons how many protons does it have
    15·2 answers
  • A sealed container is heated from 110K to 175K. The gas begins at a volume of 95L, what is the new volume of the gas upon heatin
    7·1 answer
  • What is a condensation reaction, what is a hydrolysis reaction, and how do they differ?
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!