6 a What does the sacrificial protection of iron mean?
b Both magnesium and zinc can be used for it. Why?
c But copper will not work. Explain why.

Answers

Answer 1

Explanation:

A-Corrosion

B- Magnesium helps ur body regulates its zinc levels and zinc absorbs into absorbs magnesium more efficiently


Related Questions

PLEASEEEEE ANSWERRR??

Answers

I believe it is Good
Please give me Brainliest

you have a square with a Perimeter of 16 in,, what is the Area of the square after scaling it by 5?​
inches

Answers

Answer:

f the figure is a square with a perimeter of 16 inches, then each side of the square is 4 inchest in length. Area is found by multiplying the length x the width. For a square, the length and width are the same. A = 16 sq

Explanation:

please help on this question it’s the only one i can’t do !!

Answers

Answer:

70%of 2000 = 1400

2000 tonnes of hematite contains 1400 tonnes iron oxide .

1400 tonnes of fe2O3

fe2O3 have molar mass 159.69

calculate moles = given mass/molar mass

moles = 1400000000/159.69

moles = 8766986

one mole contains = 112 g of fe

so 8766986 moles will contain = 112×8766986

= 981,902,432 grams of ferrous

which is nothing but equal to 981.90 tonnes of iron!!

PLSSSS ANSWERRRRRR?????

Answers

D
The lines are closer together
Please give me Brainliest

What is the formation of gas is an example of?​

Answers

Answer:

The formation of a gas is a clue to chemical changes. The bubbles of gas that you observed form when an antacid is dropped into water is an example of change. ... As wood burns, it turns into a pile of ashes and gases that rise into air.

Explanation:

Question 1:
How many atoms are in 25.00 g of Li.
A. 2.393 x 10^24 atoms of Li
B. 1.333 x 10^23 atoms of Li
C. 2.16 x 10^26 atoms of Li
D. 2.17 x 10^24 atoms of Li
Question 2:
How many grams is 2.393 x 10^24 atoms of CI
A. 70.45 g CI
B. 140.9 g CI
C. 140.9 mole CI
D. 70.45 mole CI
Please try to answer both questions! Thanks for all the effort :)

Answers

Answer:

1.a

2.c

hope helps

Explanation:

mark

pa

Certain minerals exclude lead but not uranium from their crystal structure, so when the minerals form they have no lead, only uranium. As time goes on, the uranium decays to lead, so measuring the ratio of lead atoms to uranium atoms allows investigators to determine the ages of the minerals. If a sample of a mineral contains 3 atoms of 207Pb207Pb for every 1 atom of 235U235U, how many years ago was it formed

Answers

Answer:

The answer is "[tex]1.4 \ \bold{ billion-years}[/tex]".

Explanation:

Using formula:

[tex]\to N_{Now} = N_{orige}e^{\lambda t} \\\\[/tex]

[tex]\to[/tex] 1 U atom produces 1 Pb atom after decay.

[tex]\to[/tex] U's original numbers are now the sum of U counts and Pb counts.

 [tex]\to N_U=(N_U+N_{pb})e^{\lambda Ut}[/tex]

[tex]\to 1 = (1+3) \ exp[(\frac{-\ln(2)}{t_{(half)}} \times t ]\\\\\to t = [\frac{\ln(4)}{\ln(2)}] \times t_{(half)}[/tex]

      [tex]= 14 \times 10^8 \ \ years\\\\=1.4 \ billion \ \ years[/tex]

What causes the difference in density of matter?

Answers

Answer:

because it has more space

Explanation:

density have many pressure

The more mass an object contains in a given space, the more dense it is. It is important to remember, though, that this relationship is not just about how closely packed together the atoms of an element or the molecules of a compound are. Density is also affected by the atomic mass of an element or compound.

How many grams are in 5 mols of KOH​

Answers

Answer:

0.08911760029829444

Explanation:

hop that this what you wanted

how does a drought (lack of water) affect an ecosystem?

Answers

When a drought occurs, their food supply can shrink and their habitat can be damaged. Lack of food and drinking water for wild animals. Increase in disease in wild animals, because of reduced food and water supplies. Migration of wildlife.

How many particles are in a 151 g sample of Li2O?

Answers

Answer:

3.052 × 10^24 particles

Explanation:

To get the number of particles (nA) in a substance, we multiply the number of moles of the substance by Avogadro's number (6.02 × 10^23)

The mass of Li2O given in this question is as follows: 151grams.

To convert this mass value to moles, we use;

moles = mass/molar mass

Molar mass of Li2O = 6.9(2) + 16

= 13.8 + 16

= 29.8g/mol

Mole = 151/29.8g

mole = 5.07moles

number of particles (nA) of Li2O = 5.07 × 6.02 × 10^23

= 30.52 × 10^23

= 3.052 × 10^24 particles.

The figure shows a nutrition label. How much energy does this food contain?

Answers

Answer:

i need help with that too.

Explanation:

Earth is currently 150 million km away from the Sun. If Earth was 200 million km away from the Sun, why would it no longer be able to support life?

Answers

Answer:

The temperature would be too cold

Explanation:

3. An unknown solution has a pH of 10. Based on the pH scale, the solution can be described as

Answers

Explanation:

For example, pH 10 is ten times more alkaline than pH 9 and 100 times (10 times 10) more alkaline than pH 8. Pure water is neutral. But when chemicals are mixed with water, the mixture can become either acidic or basic.

Convert 3.00 * 10 ^ 26 molecules of carbon dioxide gas at STP to L.
1.What is the coefficient of the scientific notation answer? 2.What is the exponent of the scientific notation answer? 3.How many significant figures are there in the answer ?
4.What is the right most significant figure in the answer?

Answers

Answer: 1. The coefficient is 1.12

2. The exponent is 4

3. There are 3 significant digits

4. The rightmost significant figure is 2.

Explanation:

Scientific notation is defined as the representation of expressing the numbers that are too big or too small and are represented in the decimal form with one digit before the decimal point times 10 raise to the power.

For example : 5000 is written as [tex]5.0\times 10^3[/tex]

According to avogadro's law, 1 mole of every gas contains avogadro's number [tex]6.023\times 10^{23}[/tex] of particles and occupy 22.4 L at STP.

[tex]6.023\times 10^{23}[/tex] molecules of [tex]CO_2[/tex] occupy = 22.4 L at STP.

Thus [tex]3.00\times 10^{26}[/tex] molecules of [tex]CO_2[/tex] occupy = [tex]\frac{22.4}{6.023\times 10^{23}}\times 3.00\times 10^{26}=11.2\times 10^3 L[/tex] at STP.

Scientific notation = [tex]1.12\times 10^4L[/tex]

The coefficient is 1.12

The exponent is 4

There are 3 significant digits

The rightmost significant figure is 2.

2 uniones iónicas y 2 covalentes, realizando las estructuras de Lewis correspondiente y averiguar la función del compuesto armado en la vida cotidiana.

Answers

Answer:

Cloruro de sodio y fluoruro de sodio.

Dióxido de carbono y monóxido de hidrógeno.

Explicación:

El cloruro de sodio y el fluoruro de sodio son los compuestos que tienen enlaces iónicos. Estos compuestos iónicos se utilizan para diferentes actividades de nuestra vida diaria. El cloruro de sodio se usa para cocinar y el fluoruro de sodio se usa en la pasta de dientes para limpiar nuestros dientes. El dióxido de carbono y el monóxido de hidrógeno son compuestos que tienen enlaces covalentes. El dióxido de carbono se usa en refrescos / refrescos y algunos otros líquidos que se pueden usar en la vida diaria. El monóxido de hidrógeno es el agua pura que bebemos todos los días en nuestra vida diaria y es muy importante para nuestra supervivencia.

How much heat is required to raise the temperature of 18 grams of liquid water by 25 C?

Answers

Since the molecular weight of water is about 18 g/mol, you have about 1 mol of water. So, now we know that it takes approximately 46.2 kJ of heat energy to warm 18.02g of water from 25C to 100C and then to vaporize it into steam. Hopefully this helped!

Explanation:

Convert 16.8 L of nitrogen monoxide gas at STP to grams .
1.What is the coefficient of the scientific notation answer ?
2.What is the exponent of the scientific notation answer ? 3.How many significant figures are there in the answer?
4.What is the right most significant figure in the answer ?

Convert 12.5 grams of fluorine gas at STP to L.
1.What is the coefficient of the scientific notation answer? 2.What is the exponent of the scientific notation answer? 3.How many significant figures are there in the answer ?
4.What is the right most significant figure in the answer?

Answers

Answer:

See explanation

Explanation:

1 mole of a gas occupies 22.4 L

x moles occupies 16.8 L

x = 1 mole *  16.8 L/22.4 L

x = 0.75 moles

number of moles = mass/molar mass

mass =  number of moles  * molar mass

mass =  0.75 moles * 30.01 g/mol = 22.5075 g = 2.25 * 10^1 g

the coefficient of the scientific notation answer = 2.25

the exponent of the scientific notation answer = 1

significant figures are there in the answer = 6

the right most significant figure in the answer = 3

2.

number of moles = 12.5g/38g/mol = 0.3289 moles

1 mole occupies 22.4 L

0.3289 moles occupies 0.3289 moles * 22.4 L/1 mole

= 7.36736 L = 7.36736 * 10^0 L= 7.37 * 10^0 L

the coefficient of the scientific notation answer =7.37

the exponent of the scientific notation answer = 0

significant figures are there in the answer = 6

the right most significant figure in the answer= 3

what do a bald eagle, a komodo dragon, and a lizard have in common

Answers

Answer:

All of them derive from a common ancestor. They each share something in their DNA that ties into their past selves, which were more closely related. As they evolved, they became more and more distant, but we can still trace them back to the olden days.

Also they all have scales.

Hope this was at least semi-useful.

Y’all know I’m adopted yup and I jus finally got the parents I’ve wanted my whole life❤️ thank u all besties

Answers

I'm glad for you! Best of luck in life tbh

Question 4
1 pts
24) Which statement best describes what happens to the particles in ice as it melts?
A) They lock into place.
B) They move more rapidly.
C) They lose some of their mars.
D) They become electrically charged.

Answers

the answer is B im sure

Can you Help me please...

Answers

Answer:

590J or 590.4J :)

Explanation:

2.46 x 6 (35-29= 6) x 40 = 590.4J

Nearest whole number : 590J

If 3.25 mol of Ar occupies 100. L at a particular temp and pressure, what volume does
14.15 mol of Ar occupy under same condition?

Answers

Answer:

435.38 L

Explanation:

From the question,

Applying ideal gas equation,

PV = nRT................... Equation 1

Where P = Pressure, V = Volume, n = number of moles, R = molar gas constant, T = Temperature.

Since Temperature and Pressure were constant,

V ∝ n

V/n = V'/n'.................... Equation 2

Where V and V'  = the initial and final Volume of Ar respectively, n and n'  = the initial and final moles of Ar respectively

make V' the subject of the equation

V' = Vn'/n............... Equation 3

Given: V = 100 L, n = 3.25 mol, n' = 14.15

Substitute into equation 3

V' = (100×14.14)/3.25

V' = 435.38 L

4.15 mole of Ar gas occupy the volume of 435.38 L under same condition.

What is ideal gas equation?

Ideal gas equation for any gas at standard condition is define as:

PV = nRT, where

P = Pressure,

V = Volume,

n = number of moles,

R = molar gas constant,

T = Temperature.

In the question it is given that pressure and temperature for the expansion is constant, so ideal gas equation becomes:

V/n = V'/n', where

V = initial volume of Ar = 100 L (given)

V' = final Volume of Ar = to find?

n = initial moles of Ar = 3.25 mole (given)

n' = final moles of Ar = 14.15 mole (given)

Now we calculate the final volume as:

V' = (100×14.14)/3.25 = 435.38 L

Hence, 435.38 L is the occupied volume.

To know more about ideal gas equation, visit the below link:

https://brainly.com/question/20348074

The atomic number of a made up element is 413. What else would you know about the element with this information?

Answers

Number of protons in an atom

Shelton measures a temperature of a solution to be 20O degrees C and stirs 5 grams of a substance into the solution. this substance disappears and 10 minutes later the substance of the solution is 80O degrees C.
based on his observation, can Shelton conclude a chemical reaction has occurred?

A) yes because the substance dissolved in the solution

B) no because the volume of the solution did not change

C) no because there are no color changing solution

D) yes because heat was produced

Answers

Answer:

did u ever get an answer??

Explanation:

Answer:

The answer is C. Yes, because heat was produced

What does the reaction rate measure?
O A. The collisions per second
O B. The speed of the reaction
C. The reaction activation energy
O D. The moles per liter of product

Answers

b
hope that helps :)
brainlyest pls

Answer:

The speed of the reaction

Explanation:

I just took the test and got it right... i hope this helps u :)

See if you can think of a way to prove that it is the oxygen in air, not nitrogen, that causes rusting.

Answers

Answer:

rusting occur in oxygen and water coz when you put a nail into the water and you leave it three days you will the nail become brownish and that is due to oxygen and water

What type of circuit has a broken path that does NOT let current flow through it?
A : Closed circuit
B: Open circut
C : Toggle
D : Switch

Answers

Answer:

B

Explanation:

PLEASE HELP ME ASAP!!!!!!! NO LINKSSSS

Answers

Answer: C

Explanation: everything else seems like it is obeying the laws of gravity except wind blowing sand into the air. hope this helps.

C
It is being blown into the air, rather than the ground

Begin walking at a brisk pace by pushing off of your heels onto your toes. After you feel warmed up (after 1 or 2 minutes), begin jogging at a slow pace (for 2 minutes). Next, run as fast as you can for 2 minutes. Slow down to a jog for 2 minutes. Slow down to a brisk walk for 2 minutes. Describes what? Question 1 options: Progressive walk Progressive Run Running Walking

Answers

Answer:

The answer is Progressive Run

Explanation:

I took the test and got it right <3

Brisk walking is the type of exercise that includes walking 3 miles in an hour at a faster speed than strolling. The situation describes the progressive run.

What is a progressive run?

A progressive run is a type of aerobic and anaerobic exercise that benefits training and race management techniques.

The progressive run technique includes the easy and relaxing jog with a gradually increased running pace. This practice is used to overcome the second-half slow run issues.

Therefore, the situation depicts option B. progressive run.

Learn more about the progressive run here:

https://brainly.com/question/18294066

Other Questions
are scientific efforts to estimate what an entire group thinks about an issue by asking a smaller sample of the group for its opinion. AAA, Inc. has two categories of overhead: maintenance and inspection. Costs expected for these categories for the coming year are as follows:Maintenance$320,000Inspection$160,000The following data have been assembled for use in developing a bid for a proposed job:Direct materials$2,400Direct labor$6,400Machine-hours160Number of inspections2Direct labor-hours320The practical capacity of machine-hours for all jobs during the year is 10,000, and for inspections is 320. These are the cost drivers for maintenance and inspection costs, respectively.Using the appropriate cost drivers, the total cost of the potential job is:Select one:a. $8,800b. $14,920c. $29,840d. $13,040 3200 people attended a football game. If 10% of the people who attended were teenagers, how many teenagers attended the game? For the story : the unknown citizenClose Read the TextRevisit sections of the text you marked duringyour first read. Read these sections closelyand annotate what you notice. Ask yourselfquestions about the text. What can youconclude? Write down your ideas.CONNEQUESTIONCloseReadCONCLUDEAnalyze the TextThink about the author's choices of patterns,structure, techniques, and ideas included inthe text. Select one, and record your thoughtsabout what this choice conveys. What do Cupid's lead tipped arrows do? FIOS is the latest technology for connecting to the Internet True False What are the main ideas that the Enlightenment was trying to address? Allocation of resources is inefficient only if O a. producer surplus is zero. O b. some of the potential gains from trade among buyers are sellers are not being realized. O c.consumer surplus is equal to producer surplus. O d. consumer surplus is lower than producer surplus. Can humans survive with carbon dioxide? during inhalation, the diaphragm and intercostal muscles contract, which_____pressure in the thoracic cavity, and air flows into the body. 2. When water flows over limestone, is dissolved, creating hard water. O sodium O chlorine O carbon O calcium What are the 3 types of scarcity? Is greater than minimal risk research allowed to include pregnant women? Nancy is making accessories for the soccer team. She uses 866.18 inches of fabric on headbands for 43 players and 3 coaches. She also uses 378.83 inches of fabric on wristbands for just the players. How much fabric was used on a headband and wristband for each player? Which polynomial function could be represented by the graph below? In order to react particles must be in the correct what ? If tertiary consumers have a total of 5 kcals, how much total energy would the producers have?. What idea did the scientific revolution popularized? please help me with stoichiometry The question is in the picture below :)