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3 years ago

If a 6 ohm wire is connected to a 10 volt battery, what will the current be?

Chemistry

2 answers:

gayaneshka [121]3 years ago

6 0

60 amperes is the answer

lidiya [134]3 years ago

5 0

Answer:

60 amperes

Explanation:

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Which of these half-reactions represents reduction?

gogolik [260]

Answer: The half-reactions represents reduction are as follows.

$Cr_{2}O^{2-}_{7} \rightarrow Cr^{3+}$
$MnO^{-}_{4} \rightarrow Mn^{2+}$

Explanation:

A half-reaction where addition of electrons take place or a reaction where decrease in oxidation state of an element takes place is called reduction-half reaction.

For example, the oxidation state of Cr in $Cr_{2}O^{2-}_{7}$ is +6 which is getting converted into +3, that is, decrease in oxidation state is taking place as follows.

$Cr_{2}O^{2-}_{7} + 3 e^{-} \rightarrow Cr^{3+}$

Similarly, oxidation state of Mn in $MnO^{-}_{4}$ is +7 which is getting converted into +2, that is, decrease in oxidation state is taking place as follows.

$MnO^{2-}_{4} + 5 e^{-} \rightarrow Mn^{2+}$

Thus, we can conclude that half-reactions represents reduction are as follows.

$Cr_{2}O^{2-}_{7} \rightarrow Cr^{3+}$
$MnO^{-}_{4} \rightarrow Mn^{2+}$

3 0

3 years ago

Identify whether this describes heat or temperature.<br> Unit of measurement: Celsius

tresset_1 [31]

Answer:

temperature

Explanation:

Celsius is a unit of temperature. Another example of this would be Kelvin or Fahrenheit.

6 0

3 years ago

Which measurement has the greatest number of significant figures?

soldi70 [24.7K]

Answer:

Option B = 60,600 mg (correct option)

Explanation:

First of all we will have an idea which numbers are consider as significant.

1 = All non-zero digits are consider significant figures like 1, 2, 3, 4, 5, 6, 7, 8, 9.

2= Leading zeros are not consider as a significant figures. e.g. 0.02 in this number only one significant figure present which is 2.

3= Zero between the non zero digits are consider significant like 105 consist of three significant figures.

4= The zeros at the right side e.g 3400 are also significant. There are four significant figures are present.

In given options, Option A 60.6 mg have 3 significant figures.

Option B have 5 significant figures.

Option C have 4 significant figures.

Option D have 3 significant figures.

Thus option b is correct option which have more significant figures.

3 0

4 years ago

Which of the following can exhibit hydrogen bonding (select all that apply)? CH4, CH3NH2, HF, H2O

vazorg [7]

CH4CH3NH to HFH 20 well no let’s get into the conversation of the reservation so we wanna do is go to nail supply on the right carbon dioxide equals air equals Nancy Pelosi equal such as tourism equals President trumps trade deals equals the amount of carbon dioxide is in the air thank you very much and I am very helpful now

5 0

3 years ago

A car starts at mile marker 145 on a highway and drives at 55 mi/hrmi/hr in the direction of decreasing marker numbers. What mil

liq [111]

Answer:

135 mile marker will the car reach after 2 hours.

Explanation:

Speed of the car = 55 mile/hour

Distance covered in 2 hours = d

$Speed=\frac{Distance}{Time}$