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Anestetic [448]
3 years ago
12

G An example of an element is ____.

Chemistry
1 answer:
Contact [7]3 years ago
4 0
Pipes are made of the element Lead so the answer should be d) lead pipe



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Suppose the mole number of Ca2+ ions in a 50 mL water sample is quantified as 1.5 × 10−5 mol. What is the concentration of Ca2+
Anna11 [10]
\frac{1.5x 10^{-5} mol  Ca^{2+}}{50ml}  ( \frac{1 mol CaC O_{3} }{1 mol  Ca^{2+} } )( \frac{100,000 ppm}{1 molCaC O_{3}/L } ) \\ =0.0300234
5 0
3 years ago
Read 2 more answers
Imagine you have two beakers. Both beakers are filled with the same amount of water. The water in both beakers is the same tempe
musickatia [10]

Substance A is less soluble in water than Substance B.

In this experiment, we can see that small amount of substance A is present at the bottom of the beaker which means that some amount of substance A does not dissolve in water.

While on the other hand, no substance B is present at the bottom of beaker which shows that all the substance B is dissolved in water so we can made a conclusion that Substance A is less soluble in water than Substance B.

Learn more about dissolving here: brainly.com/question/17030000

Learn more: brainly.com/question/25937667

4 0
3 years ago
What mass of hcl is consumed by the reaction of 5.0 moles of mg??
lianna [129]
The answer is c I think
5 0
3 years ago
Which of the following are considered risk factors for high blood pressure? a) Sedentary lifestyle b) Being overweight or obese
erma4kov [3.2K]
I hope it’s b.
Hope it helps
3 0
3 years ago
How many grams of calcium phosphate can be produced when 78.5 grams of calcium hydroxide reacts with excess phosphoric acid?
gogolik [260]
Hello,


You balanced the equation and then you have to set up what is called a psychometric equation for each reactant so that you get the same unit for each in order to compare the two. so for (calcium hydroxide) = 78.5 g ÷ (40.1 + 32 + 2) = 1.0593 mol * Note: I just broke it down in my own science way..u can just get the molar mass of calcium hydroxide which is approx 74 g/mol


Hope this helps
3 0
4 years ago
Read 2 more answers
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