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3 years ago

A substance which melts/boils at a fixed temperature is a pure substance. True False

Chemistry

2 answers:

ololo11 [35]3 years ago

3 0

True

when a substance is impure, it boils over a range of temperature rather than a specific temperature

ASHA 777 [7]3 years ago

3 0

I believe the correct answer is true. <span>A substance which melts/boils at a fixed temperature is a pure substance. This is because the substance is homogeneous throughout that the properties as well would be uniform. Hope this answers the question. Have a nice day.</span>

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What is one way that electric charges are different from magnetic poles?

sashaice [31]

The answer is A. As the first statement is a true statement. Hope this help you

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3 years ago

Create and balance a chemical equation for the following statement.

m_a_m_a [10]

FeCl₂ + 2NH₄OH → Fe(OH)₂ + 2NH₄Cl

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2 years ago

For the reaction HNO3 + Mg(OH)2→ Mg(NO3)2 + H2O, how many grams of magnesium nitrate are produced from 8.00 mol of nitric acid,

ollegr [7]

Answer:

tha mass of magnesium nitrate is 592g

Explanation:

from a balanced chemical equation

2HNO3 + Mg(OH)2→ Mg(NO3)2 + 2H2O

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2 years ago

Read 2 more answers

I know there are 4.5*10^-9 seconds in 4.5 nanoseconds, but when I enter it into my TI-30xIIs, I get 4.5*10^-10. I enter it as 4.

o-na [289]

Answer:

You are not using properly the function exponential in your calculator

Explanation:

When a number is too big or too small we use scientific notation. This is a number between 1 a 10 multiplied by a power of 10.

When you are writing 4.5*10^-9 you are actually writing 0.0000000045 in scientific notation.

When you enter this in the calculator you have to use the function EXP after the first two numbers.

Steps: 1) Enter 4.5

2) Enter EXP

3) Enter minus (-)

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3 years ago

Chlorine can bond with fluorine to form CIF. Chlorine can also bond with lithium to form LiCI Which compound will have a greater

Sergio [31]

Answer: $ClF$ will have a greater partial charge.

Explanation:

A polar covalent bond is defined as the bond which is formed when there is a low difference of electronegativities between the atoms, thus resulting in charge difference. Example: $ClF$

Non-polar covalent bond is defined as the bond which is formed when there is no difference of electronegativities between the atoms and thus there is no charge difference. Example: $F_2$

Ionic bond is formed when there is complete transfer of electron from a highly electropositive metal to a highly electronegative non metal. The electronegative difference between the elements is high. The charges on cation and anion neutralise each other. Example: $LiCl$

Thus as $ClF$ will have greater partial charge.

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3 years ago