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3 years ago

When a metal reacts with a nonmetal, the metal will...

Chemistry

1 answer:

Svet_ta [14]3 years ago

6 0

Answer : The correct option is, (a) lose electrons and form a positive ion

Explanation :

Metals : These are the elements that easily loose electrons and forms cations.

They require less energy to loose electrons because electrons are loosely bound to the nucleus.

Non-metals : These are the elements that easily gain electrons to form an anion.

They require more energy to loose electrons because the electrons are tightly bound to the nucleus.

As per question, when a metal reacts with a nonmetal, the metal will lose electrons and form a positive ion and non-metal gain electrons and form a negative ion.

Hence, the correct option is, (a)

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Sam wants to demonstrate how water changes from a solid to a gas. He places ice in a pot on a stove. What variable is causing wa

olganol [36]

Hello,

The answer is option A "the heat from the stove".

Reason:

The answer is option A because the variable the heat from the stove is causing the ice to change into water. Its not option B because thats not in the procedures. Its not option C because it is not a variable. Its also not D because thats also not a variable.

If you need anymore help feel free to ask me!

Hope this helps!

~Nonportrit

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3 years ago

Read 2 more answers

An object exerts force of 500 n and sits on an area of 4.5m X 1.5m. Calculate the amount of pressure exerted by the object in to

vlabodo [156]

4.5 times 1.5

divide by 500n

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3 years ago

A change in matter that produces new substances is called a _____. 1.mixture 2.physical change 3.solution 4.chemical change

12345 [234]

Answer:

Chemical Change

Explanation:

chemical bonds within the substance have been altered because a new substance has been produced. It cannot be a mixture because they do not involve changes in matter, it cannot be a physical change because they do not result in new substances, it is not a solution because those do not involve changes in matter.

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3 years ago

Calculate the mass defect for the formation of phosphorus-31. The mass of a phosphorus-31 nucleus is 30.973765 amu. The masses o

Nata [24]

Answer: The mass defect for the formation of phosphorus-31 is 0.27399

Explanation:

Mass defect is defined as the difference in the mass of an isotope and its mass number.

The equation used to calculate mass defect follows:

$\Delta m=[(n_p\times m_p)+(n_n\times m_n)]-M$

where,

$n_p$ = number of protons

$m_p$ = mass of one proton

$n_n$ = number of neutrons

$m_n$ = mass of one neutron

M = mass number of element

We are given:

An isotope of phosphorus which is $_{15}^{31}\textrm{P}$

Number of protons = atomic number = 15

Number of neutrons = Mass number - atomic number = 31 - 15 = 16

Mass of proton = 1.00728 amu

Mass of neutron = 1.00866 amu

Mass number of phosphorus = 30.973765 amu

Putting values in above equation, we get:

$\Delta m=[(15\times 1.00728)+(16\times 1.00866)]-30.973765\\\\\Delta m=0.27399$

Hence, the mass defect for the formation of phosphorus-31 is 0.27399

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3 years ago

Easy Question! Chemistry - Please help! I give thanks - It's the picture - Question 2

Katena32 [7]

Volume of a cylinder = $\pi r^{2} h$
r = $\frac{D}{2}$
  = $\frac{8.4cm}{2}$
  = 4.2cm

h = 14.5cm
$\pi$ = 3.14

V= (3.14) * ( $(4.2cm)^{2}$ )*  14.5cm
= 803.1 $cm^{3}$

7 0

3 years ago