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mina [271]
3 years ago
8

When a student combed his dry hair for a long time, his hair began to stand up. Which of these has MOST LIKELY happened? A) The

comb and hair have become charged with similar charges. B) The comb and hair have become charged with opposite charges. C) The comb has become charged, but the hair has remained neutral. D) The hair has become charged, but the comb has remained neutral.
Chemistry
2 answers:
Alecsey [184]3 years ago
5 0
B. 

Opposites attract, likes repel.
GrogVix [38]3 years ago
3 0

Answer:

B

Explanation:

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At standard temperature and pressure, hydrogen is a colorless, odorless, tasteless, non-toxic, nonmetallic, highly combustible diatomic gas with the molecular formula H2. Since hydrogen readily forms covalent compounds with most nonmetallic elements, most of the hydrogen on Earth exists in molecular forms such as water

Explanation:

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A Conical Container have a radius 7 cm and height 5cm what is the capacity of the cone​
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2 years ago
What is the Kelvin temperature of the air in a tire if the pressure inside the tire is 188 kPa at 32°C. While driving under peri
DENIUS [597]

Answer:

  • <u>414K</u>

Explanation:

The question is not completely clear because some missing parts or grammar (syntax) errors.

Interpreting it, the question is <em>what is the Kelvin temperatue of the air in a tire, when the pressure in the tire has increased to 225 kPa, if the initial conditions of the air inside the tire were 188kPa of pressure and a temperature of 32ºC.</em>

To solve this, you can assume constant volume and use the law of Gay-Lussac for ideal gases:

          \dfrac{P_1}{T_{1}}=\dfrac{P_2}{T_2}

That equation works with absolute temperatures, i.e. Kelvin.

  • 32ºC = 32 + 273.15 K = 305.15K

Then solve for T₂, substitute and compute:

        T_2=P_2\times \dfrac{T_1}{P_{1}}=225kPa\times \dfrac{305.15K}{188kPa}

        T_2=413.90K\approx 414K\longleftarrow answer

8 0
3 years ago
What’s the answer to number 10
lara [203]
The ones on left are the reactants
6 0
3 years ago
Correct measurement for solubility
VMariaS [17]

Answer:

g/100g

Explanation:

grams per 100 g of solvent or short term g/100g

6 0
3 years ago
Read 2 more answers
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