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emmasim [6.3K]
3 years ago
5

Select whether the statement is for Speed, Velocity, or Acceleration.

Chemistry
1 answer:
Vesna [10]3 years ago
4 0

Answer:

I think that the statement is relative to speed because it is saying km per second.

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What is the mass in grams of 0.7350 moles of sodium?
Alik [6]

Answer:

Explanation:

1 mol of sodium = 23 grams (use the number on your periodic table).

0.7350 mol sodium = x

Cross multiply

1*x = 0.7350 * 23

x = 16.905

You will get slightly less than this, depending on your periodic table. But the method will be the same.

4 0
3 years ago
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Vadim26 [7]

Answer: the third one

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3 years ago
Mass weight of original copper rod
jolli1 [7]

Answer:

copper, 8930.

Explanation:

Copper is a chemical element with the symbol Cu (from Latin: cuprum) and atomic number 29. to сuprum (Latin). Coper (Old English) and copper were derived from this, the later spelling first used around 1530.  muscle, and bone. The adult body contains between 1.4 and 2.1 mg of copper per kilogram of body weight.

8 0
2 years ago
What is an emission spectrum? Does it show the energy that was released or absorbed
AlekseyPX

Answer:

Released

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5 0
2 years ago
Which statement is generally true about CaCl2? It has only metallic bonds between the atoms. It has only covalent bonds between
lutik1710 [3]

Answer: Its bonds are formed by large differences in electronegativity.

Explanation:

An ionic bond is formed when an element completely transfers its valence electron to another element. The element which donates the electron is known as electropositive element and the element which accepts the electrons is known as electronegative element. This bond is formed between a metal and an non-metal.

Covalent bond is formed by sharing of electrons between non metals.

As electronegativity of calcium is 1 and that of chlorine is 3.16, there is a difference of (3.16-1) =2.16, which is large and thus form ionic bond.

6 0
3 years ago
Read 2 more answers
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