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Dimas [21]
3 years ago
8

4. Substances that existed before mixing-still exist-after substances-are-mixed----

Chemistry
1 answer:
pantera1 [17]3 years ago
5 0
False; Because when 2 substances are mixed another substance is created.
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Uranium in the isotope below had 140 nutrons​
Brut [27]

Answer:

It has 140 neutrons because Mass number= No of protons + no of neutrons

4 0
4 years ago
In a combustion reaction of C3H8 + 5O2 = 3CO2 + 4H2O, how do you know that the first compounds will produce the nuber of what th
katovenus [111]
To balance chemical equations, you should just remember that the number of atoms of an element in the reactant side must be equal to the number of atoms of the same element in the product side. The order of the substances doesn't matter. What is important that the equation balances.
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3 years ago
The elements of ________ are: 1) the felonious taking of personal property, 2) from the person or immediate presence of another,
erma4kov [3.2K]

Answer:

robbery

Explanation:

The elements of robbery are 1) the felonious taking of personal property, 2) from the person or immediate presence of another, 3) against the will of the victim, and 4) accomplished by means of force or by putting the victim in fear.

Action of taking property by unlawfully from a person or place by force or threat of force is called robbery and all above condition satisfies the term robbery hence robbery is correct match.

4 0
3 years ago
The unit conversion between rankine and kelvin is (linear, exponential, quadratic, none of the above)?
diamong [38]

Answer:

Unit conversion between Rankine and Kelvin is linear.

Unit conversion between degree Celsius and degree Fahrenheit is linear.

Explanation:

Relation between rankine and Kelvin is

R\ =\ \dfrac{9}{5}\ K

So, the plot between Rankine and Kelvin is a straight line with zero intercept and has a slope having value \dfrac{9}{5}.

Relation between degrees Celsius and degrees Fahrenheit is given by

^{\circ}C\ =\ \dfrac{5}{9}\ (^{\circ}F\ -\ 32)

So, the plot between degrees Celsius and degrees Fahrenheit is a straight line with slope \dfrac{5}{9} and negative intercept of \dfrac{160}{9}.

4 0
4 years ago
During active transport, substances move from regions of blank concentration to regions of blank concentration
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<span>Active transport runs counter to facilitated diffusion. In active transport, molecules move against the concentration gradients, running from areas of lower concentration to areas of higher concentration. This is where energy is used.</span>
4 0
3 years ago
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