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SpyIntel [72]
3 years ago
8

The mass of a mouse is around 22 grams (0.022 kg). What is the weight of a mouse at sea level on Earth?

Chemistry
2 answers:
Debora [2.8K]3 years ago
7 0
The correct answer would be <span>0.22 N.

Hope this helps.</span>
balandron [24]3 years ago
7 0

Answer: last option, 0.22 N


Explanation:


<em>Weight</em> is the attractive force that the Earth exerts on the objects, and it is calculated as the product of the mass of the object and the gravitational acceleration: w = mg.


Gravitational acceleration depends of the height of the objects but it is almost a constant at the normal altitudes (near the surface) with which this kind of problems deal with. Of course, this is true at <em>sea level on Earth.</em>


A standard value used for g is 9.81 m/s^2. And for quick or approximate calculations it can be used 10 m/s^2.


So, to calculate what is the<em> weight of a mouse at sea level on Earth</em>, when you have that the mass of a mouse is around 22 grams (0.022kg), you  folow these steps:


1) Data:

  • m = 0.022 kg
  • g = 10 m/s^2
  • w = ?

2) Formula: w = mg


3) Solution: w = 0.022 kg (10 m/s^2) = 0.22 N.


So, the answer is the last option: 0.22N.

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The complete table is inserted.

A table is given,

Formulas used:

pH=  -log(H⁺)

pOH=  -log(OH⁻)

pH+ pOH=14

Calculations:

For A: (H⁺)=2×10⁻⁸M

Using the pH formula:

pH=  -log(H⁺)=-log(2×10⁻⁸)=7.69

pOH=14 - 7.69=6.3

Calculating OH concentration,

pOH=  -log(OH⁻)

6.3= -log(OH⁻)

(OH⁻)=5.011×10⁻⁷M

Hence, the nature of A is basic.

Similarily,

For B,

(OH⁻)=1×10⁻⁷

Using the pH formula:

pOH=  -log(OH⁻)= -log(1×10⁻⁷)=7

pH=14-7=7

Calculating H concentration,

pH=  -log(H⁺)

7= -log(H⁺)

(H⁺)=1×10⁻⁷M

Hence, the nature of B is neutral.

Similarily,

For C,

pH=12.3

Using the pH formula:

pOH=14-12.3=1.7

Calculating H concentration,

pH=  -log(H⁺)

12.3= -log(H⁺)

(H⁺)=5.011×10⁻¹³M

Calculating OH concentration,

pOH=  -log(OH⁻)

1.7= -log(OH⁻)

(OH⁻)=1.99×10⁻²M

Hence, the nature of C is Basic.

Similarily,

For D,

pOH=6.8

Using the pH formula:

pH=14-6.8=7.2

Calculating H concentration,

pH=  -log(H⁺)

7.2= -log(H⁺)

(H⁺)=6.309×10⁻⁸M

Calculating OH concentration,

pOH=  -log(OH⁻)

6.8= -log(OH⁻)

(OH⁻)=1.58×10⁻⁷M

Hence, the nature of D is basic.

Learn more about the acid and bases here:

brainly.com/question/16189013

#SPJ10

3 0
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