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3 years ago

Arrange the metals sodium,copper, and magnesium in the decreasing order of their reactivity

Chemistry

2 answers:

irakobra [83]3 years ago

8 0

Answer:

sodium>magenisium>copper

Yuliya22 [10]3 years ago

4 0

Sodium>magnesium>copper

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An atom has an average atomic mass of about 63.5 amu. What is the chemical symbol for the atom? Consult the periodic table.

Mama L [17]

The best and most correct answer among the choices provided by your question is the fourth choice.

Copper has an average atomic mass of about 63.5 amu.

I hope my answer has come to your help. Thank you for posting your question here in Brainly. We hope to answer more of your questions and inquiries soon. Have a nice day ahead!

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3 years ago

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Positron Emission Tomography (PET) is an advanced medical scanning technique. Fluorine-18 is a commonly used isotope for PET sca

TiliK225 [7]

Answer:

Option D. equation D

Explanation:

Positron is simply a beta plus decay or superscript 0 e subscription 1 (0 1 e).

Now, let us consider the options given:

Option A is emitting alpha decay

Option B is emitting beta minus decay.

Option C is emitting beta minus decay.

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2 years ago

2. ATO kg bouting ball would require what force to accelerate down an alleyway at a rate of ons?

Mars2501 [29]

Answer:

2. 30N

3. 5,000N

4. 15 kg

5. 2,800 kg

Explanation:

2. A 10 kg bowling ball would require what force to accelerate down an alleyway at a rate of 3m/s² ?

Notice that I completed the question with the garbled and missing values:

Data:

F = ?

m = 10 kg

a = 3m/s²

Physical principles:

Newton's second law: $F=m\times a$

Solution:

Substitute and compute

$F=10kg\times 3m/s^2=30N$

3. Salty has a car that accelerates at 5 m/s². If the car has a mass of 1000 kg, how much force does the car produce?

Notice that I arranged the typos.

Data:

F = ?

m = ?

a = ?

Physical principles:

Newton's second law: $F=m\times a$

Solution:

Substitute and compute

$F=1,000kg\times5m/s^2=5,000N$

4. What is the mass of a falling rock if it produces a force of 147 N?

Data:

F = 147N

m = ?

a = falling rock

Physical principles:

neglecting air resistance ⇒ a = g: gravitational acceleration: 9.8m/s²

Newton's second law: $F=m\times a$

Solution:

Clear m from Newton's second law

$m=\dfrac{F}{a}$

Substitute with F = 147 N and a = g = 9.8m/s², and compute

$m=\dfrac{147N}{9.8m/s^2}=15Kg$

5. What is the mass of a truck if it produces a force of 14,000 N while accelerating at a rate of 5 m/s²?

Data:

F= 14,000N

m = ?

a = 5m/s²

Physical principles:

Second Newton's law: $F=m\times a$

Solution:

Clear m from Newton's second law

$m=\dfrac{F}{a}$

Substitute with F = 14,000 N and a = 5m/s², and compute

$m=\dfrac{14,000N}{5m/s^2}=2,800kg$

6 0

3 years ago

13. What volume of a 0.750 M solution can be made with 2.35 moles of NaHCO3? (Show WORK. Circle the correct answer: 3.13 L or 2.

alexdok [17]

Answer:

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2 years ago

A solution has a pOH of 2.40. Find out its pH

dusya [7]

I believe the answer is 11.6

4 0

2 years ago

Arrange the metals sodium,copper, and magnesium in the decreasing order of their reactivity​

Arrange the metals sodium,copper, and magnesium in the decreasing order of their reactivity