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ohaa [14]
3 years ago
10

A material that conducts electricity only at high temperatures.

Chemistry
1 answer:
vfiekz [6]3 years ago
8 0

Answer:

Semiconductor

Explanation:

Semiconductors conduct electricity as the temperatures increase.

Hope this helped.

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A ball was kicked by a player, the ball was stationary, then it gains a velocity of 5 m/s North. Did the ball accelerate or no?
Tomtit [17]

Answer:

yes

Explanation:

it started moving North 5 m/s

7 0
3 years ago
The barometer reads 715 mm Hg. Calculate the corresponding pressure in (a) atmospheres, (b)inches of Hg, and © lb/in^2
Inessa [10]

Answer:

Explanation:

2266mm Hg

4 0
3 years ago
Read 2 more answers
Write the empirical formula for at least four ionic compounds that could be formed from the following ions
andreyandreev [35.5K]

Answer:

NH₄CN,  NH₄IO₃,  Fe(CN)₃,  Fe(IO₃)₃

Explanation:

Cations (positively charged ions) can only form ionic bonds with anions (negatively charged ions). However, you can't just simply put one cation and one anion together to form a compound. Each compound needs to been neutral, or have an overall charge of 0. When cations and anions do not have charges that perfectly cancel, you need to modify the amount of each ion in the compound.

1.) NH₄CN

-----> NH₄⁺ and CN⁻

-----> +1 + (-1) = 0

2.) NH₄IO₃

-----> NH₄⁺ and IO₃⁻

-----> +1 + (-1) = 0

3.) Fe(CN)₃

-----> Fe³⁺ and CN⁻

-----> +3 + (-1) + (-1) + (-1) = 0

4.) Fe(IO₃)₃

-----> Fe³⁺ and IO₃⁻

-----> +3 + (-1) + (-1) + (-1) = 0

3 0
2 years ago
Which recursive formula describes the sequence below? 5, 13, 29, 61, 125, ...
4vir4ik [10]
(n x 2) + 3

5 x 2 = 10
10 + 3 = 13

13 x 2 = 26
26 + 3 = 29

and so on.
3 0
3 years ago
Read 2 more answers
A (c4h8) reacts with borane in thf followed by hydrogen peroxide in aqueous naoh to give b (c4h10o). treatment of b with aqueous
pentagon [3]

Answer:

1-Butene

Explanation:

In the final reaction, the H_2CrO_4 will<u> oxidize</u> the previous molecule to obtain the <u>butanoic acid</u>, therefore the previous molecule has to be <u>primary alcohol</u>: 1-Butanol. The BH_3/H_2O_2 reaction can produce <u>antimarkonikov alcohols</u> therefore the initial molecule has to be an <u>alkene</u>: the 1-Butene.

<u>To further explanations see the attached image.</u>

3 0
3 years ago
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