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4 years ago

What is the relationship between resistance and current for a given voltage?

Chemistry

2 answers:

PIT_PIT [208]4 years ago

5 0

Answer:

Explanation:

ValentinkaMS [17]4 years ago

4 0

Answer:

As resistance increases, current increases. As resistance increases, current decreases. As resistance increases, current stays the same.

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Will give brainlist need answers asap

Serga [27]

Answer:

40 g

Explanation:

Find the line labeled KClO3 (which might take you a min, theres a lot of lines here)

Notice that when the line creates a direct point, you can measure the exact temperature needed to dissolve a certain amount (like how they gave 30 degrees and it lined up perfectly with the 10 g line. )

Since its asking for the amount at 80 degrees, all you need to do is trace the line to the 80 degree point, and look at the grams. (notice it made a direct point, so there definitely should be any decimals or guesswork)

By reading the graph, you can tell that at 80 degrees, it dissolves 40 grams, and that is your answer.

Hope this helps :)

3 0

3 years ago

7. Who was the first explorer from France to reach North America? A. Giovanni da Verrazano C. Louis Joliet B. Jacques Cartier D.

Tanzania [10]

Jacques Cartier is the first explorer to reach North America

6 0

4 years ago

Read 2 more answers

Consider the reaction, C2H4(g) + H2(g) - C2H6(8), where AH = -137 kJ. How many kilojoules are released when 3.5 mol of CH4

antiseptic1488 [7]

Answer: 480 kJ of energy is released when 3.5 mol of $C_2H_4$ reacts.

Explanation:

The balanced chemical reaction is:

$C_2H_4(g)+H_2(g)\rightarrow C_2H_6(g)$ $\Delta H=-137kJ$

Thus it is given that the reaction is exothermic (heat energy is released) as enthalpy change for the reaction is negative.

1 mole of $C_2H_4$ on reacting gives = 137 kJ of energy

Thus 3.5 moles of $C_2H_4$ on reacting gives = $\frac{137}{1}\times 3.5=480 kJ$ of energy

Thus 480 kJ of energy is released when 3.5 mol of $C_2H_4$ reacts.

7 0

3 years ago

100 points! Formation of an Ion

user100 [1]

$\huge\bold\red{Answer}$

If every oxygen is combined with an aluminium ion, it has a charge of -2, The charge of each aluminum ion would be -3.

Uncharged Aluminum atom must need to lose it's electrons,in order to form the bond with oxygen which has vacant orbitals

ion

atom that has a positive or negative charge because it lost or gained one or more electrons

chemical bond

the attractive force that holds atoms or ions together

ionic bond

a chemical bond in which one atom loses an electron and the other atom gains electrons to form ions

chemical formula

a combination of chemical symbols and numbers to represent a substance

Thanks

covalent bond

bond formed by the sharing of electrons between atoms

6 0

3 years ago

What is the length of the x - component of the vector plotted below ?

MAVERICK [17]

Answer:

Explanation:

You can make that into a triangle and find the hypotenuse by using the pythagorean theorem a^2 + b^2 = c^2

Your hypotenuse is your vector that you're looking for

Heres the work:

3^2 + 3^2= r^2

r=3

Please let me know if this helped, and rank it the brainliest if possible!

4 0

3 years ago