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Goryan [66]
3 years ago
11

Complete the chemical equation for this reaction.

Chemistry
1 answer:
faust18 [17]3 years ago
4 0
Ca + 2H2O -> Ca(OH)2 + H2
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What physical and chemical properties should braces (used to straighten teeth possess in order to attain its desired goal to str
Nitella [24]

Answer: Braces are used by the people to correct the alignment and position of tooth or teeth in the jaw.

Explanation:

The teeth braces must have strong tensile strength and must create a constant pressure on the teeth so as to allow the straightening of the teeth.

The strong force of attraction between the molecules of the braces material that can be steel, nickel, molybdenum, copper, titanium. This makes the bracing material rigid on the teeth.

6 0
3 years ago
Karen has a mass of 53 kg as she rides the up escalator at woodley park station of the washington
aivan3 [116]
  <span> Vertical height of longest escalator in free world = 58.8 sin 32.4 = 31. 5 m
Karen's mass = 54.6 kg
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7 0
4 years ago
The density of water is 1 gm/ml. An object has a mass of 58 grams. What volume must it have in order to float in water?
Keith_Richards [23]

Answer:

58mL

Explanation:

Given parameters:

Density of water  = 1g/mL

Mass of object  = 58g

Unknown:

The volume the object must have to be able to float in water = ?

Solution:

To solve this problem, we know that the object must have density value equal to that of water or less than that of water to be able to float.

We then set its density to that of water;  

   Density  = \frac{mass}{volume}  

      Volume  = \frac{mass}{density}  

So;

      Volume  = \frac{58}{1}   = 58mL

7 0
3 years ago
What term is best described as the rate of a chemical reaction at any instant in time?
Fantom [35]

Answer:

instantaneous rate would be the term.

5 0
2 years ago
What elements make up most of the mantle?
amid [387]
44.8% oxygen, 21.5% silicon, and 22.8% magnesium. There's also iron, aluminum, calcium, sodium, and potassium. These elements are all bound together in the form of silicate rocks, all of which take the form of oxides.
8 0
3 years ago
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