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anzhelika [568]
3 years ago
12

Elements whose properties are between those of metals and solid nonmetals are called:

Chemistry
2 answers:
Charra [1.4K]3 years ago
6 0

Answer:

metalloids

Explanation:

they are solid at roomtempreture and alloys with metals.

examples boron,silicon,arsenic,tellurium

Tom [10]3 years ago
4 0

Answer:

mettaliods

Explanation:

It has the both property of metal and non metal so it is called mettaliod.

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10g of sugar is dissolved by water to make 200g of solution of sugar. What is the percent by mass of the solution?​
Scorpion4ik [409]

Explanation:

In sugar solution 200 g has sugar 10 g

In sugar solution 100 g has sugar 10/200 × 100

= 5 %w/w

7 0
4 years ago
2. How many orbitals are in the following sublevels?
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6 0
3 years ago
How many grams of potassium chlorate must be heated to produce 30.0g of oxygen? socratic.org
DanielleElmas [232]

Answer:

76.56g

Explanation:

Firstly, to do this we need a correct and balanced equation for the decomposition of potassium chlorate.

2KClO3 —-> 2KCl + 3O2

From the balanced equation, we can see that 2 moles of potassium chlorate yielded 3 moles of oxygen gas

We need to know the actual number of moles of oxygen gas produced. To do this, we divide the mass of the oxygen gas by its molar mass. Its molar mass is 32g/mol

The number of moles is thus 30/32 = 0.9375 moles

Now we can calculate the number of moles of potassium chlorate decomposed.

We simply do this by (0.9375 * 2)/3 = 0.625 moles

Now to get the number of grammes of potassium chlorate decomposed, we simply multiply this number of moles by the molecular mass. The molecular mass of KClO3 is 39 + 35.5 + 3(16) = 122.5g/mol

The amount in grammes is thus 122.5 * 0.625 = 76.56g

5 0
3 years ago
Read 2 more answers
A potato chip burned and gave off enough energy to heat up 0.5 kg of water from 20oC to 25o. The specific heat of water is 4,184
Darina [25.2K]

Answer:

Energy produced by the chip =10,460 Joules.

Explanation:

The specific heat of water is one calorie/gram ° C = 4.186 joules/gram ° C, which is higher than any other common substance. As a result, water plays a very important role in regulating temperature. The specific heat per gram for water is much greater than that of a metal, as described in the water-metal example. Replace the mass (m), the temperature change (ΔT), and the specific heat (c) of the solution in the equation Q = c x m x  ΔT, where Q is the heat absorbed by the solution. For specific heat of water we goes as given in the question 4,184 J/kg°C

                          Q =4184×0.5×(25-20)

                              =10,460 Joules.

Thus heat gained by water (Q)= Energy produced by the chip =10,460 Joules.

6 0
3 years ago
What is another example of pairing advanced technology with simple machines?
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One example could be scanners linked to a networked database. Those little hand scanners that you see at a Publix or Wal-Mart report back to series of systems that allow stores to track inventory across the entire business allowing them to anticipate when they should order more of one item or see what has been selling particularly well -- or not. Consumers don't see any of that when they buy their Count Chocula, but the database systems do and those can be extremely complex. I hope this helps you out!! have a wonerful day!!
8 0
3 years ago
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