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Novosadov [1.4K]
2 years ago
6

Which of the following is true about this lever?

Chemistry
2 answers:
katrin2010 [14]2 years ago
8 0

it will rotate clock wise

Murljashka [212]2 years ago
8 0
It will rotate clockwise
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Scenes A and B depict changes in matter at the atomic scale:
kaheart [24]

Scene B depicts chemical change in matter at atomic change.

Composition distinguishes a chemical reaction from a physical reaction. In a chemical process, the makeup of the components changes; in a physical change, the appearance, smell, or straightforward exhibition of a sample of matter changes without changing its composition. Despite the fact that we refer to them as physical "reactions," nothing is actually changing. A change in the substance in question's elemental composition is necessary for a reaction to occur. Therefore, from now on, we will simply refer to bodily "reactions" as physical changes.

Learn more about Chemical changes here-

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1 year ago
Hurry it’s for a test!! The arctic fox and gray wolf are two examples of
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B
Protect themselves from predators
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2 years ago
Which of the following does not serve as a way to neutralize the charge in a body?
xenn [34]

<u>Answer: </u><em>B. Adding more protons to a positively charged body until the number of protons matches the number of electrons</em>

Option B is the appropriate response  

<u>Explanation:</u>

Utilising the equivalent number of inverse charges will kill a charged body.  

Adding more protons to a decidedly charged body until the number of protons coordinates the quantity of electrons won't kill the body since protons are emphatically charged particles. Adding more protons to an emphatically charged body would make it all the more decidedly charged.  

Enabling free electrons to escape from a contrarily charged body will kill since the more negative body leaves the negative electrons.

3 0
3 years ago
Read 2 more answers
martha needs to determine the density of gasoline she has determined the mass to be 1250g and the volume to be 1500ml what is th
Dahasolnce [82]

We know that the equation for density is:

D=\frac{m}{V}

where D is the density, m is the mass in grams, and V is the volume.

Given two of the variables, we can then solve for density:

D=\frac{1250g}{1500mL}=\frac{0.833g}{mL}

Therefore, we now know that the density of the gasoline is 0.833g/mL.

6 0
3 years ago
Copper is a solid phase of copper still unknown to science. The only difference between it and ordinary copper is that Copper fo
Scrat [10]

Complete Question

The complete question is shown on the first uploaded image  

Answer:

The density is  \rho =  8.21479 g/cm^3

Explanation:

From the question we are told that

         the lattice constant is  a =  0.295 nm = 0.295*10^{-9} = 0.295*10^{-7} cm

The density of Copper (\beta) is mathematically represented as

     \rho  =  \frac{ZM}{a^3N_A}

Where  Z is the number of units in a unit cell and  for BCC crystals  Z =2

          M is the molar mass of copper which same for Copper with a value of  

           M =  63.5  g/mol

          N_A is the Avogadro's constant with a value of  N_A =  6.022*10^{23}

Substituting values

       \rho =  \frac{2 *63.5}{(0.295*10^{-7})^3 * (6.022*10^{23})}

      \rho =  8.21479 g/cm^3

       

8 0
3 years ago
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