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ycow [4]
3 years ago
5

Why shouldn't schools be allowed to ban dyed hair?

Chemistry
1 answer:
LenKa [72]3 years ago
6 0
If we apply oil that will give us relief without oil we feel head ache because of stress so schools don't allow dry hair
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The percentage composition of acetic acid is found to be 39.9% C, 6.7% H, and 53.4% O. What is the empirical formula of acetic a
anastassius [24]

Answer:

CH₂O

Explanation:

From the question given above, the following data were obtained:

Carbon (C) = 39.9%

Hydrogen (H) = 6.7%

Oxygen (O) = 53.4%

Empirical formula =?

The empirical formula of acetic acid can be obtained as follow:

C = 39.9%

H = 6.7%

O = 53.4%

Divide by their molar mass

C = 39.9 / 12 = 3.3

H = 6.7 / 1 = 6.7

O = 53.4 / 16 = 3.3

Divide by the smallest

C = 3.3 / 3.3 = 1

H = 6.7 / 3.3 = 2

O = 3.3 / 3.3 = 1

The empirical formula => CH₂O

4 0
3 years ago
Si en un planeta la presión atmosférica es mayor que 5,1 atm terrestres, los habitantes podrían nadar en ríos de dióxido de carb
Sphinxa [80]

Answer:

Los habitantes del planeta con una atmósfera superior a 5,1 atm de la Tierra, no estarían nadando en ríos de dióxido de carbono líquido

Explanation:

De las tablas de datos termodinámicos, la presión a la que el vapor de dióxido de carbono está en equilibrio con su estado líquido a una temperatura ambiente de 25 ° C es 6,401 kPa, lo que equivale a 63,17296 atm.

Por lo tanto, a una presión de 5.1 de la atmósfera terrestre, el dióxido de carbono es completamente gaseoso y los habitantes del planeta con una presión atmosférica de 5.1 atm de la Tierra todavía observarían solo hidrógeno gaseoso y no estarían nadando en ríos de dióxido de carbono líquido.

5 0
3 years ago
Which is the most likely way an automotive engineer would use chemistry?
Fittoniya [83]

Answer:

by making parts... emit

5 0
3 years ago
For each of the following acid-base reactions, calculate how many grams of each acid are necessary to completely react with and
Anika [276]

Answer:

m_{HCl}=2.19gHCl

Explanation:

Hello,

In this case, for the reaction between hydrochloric acid and sodium hydroxide, for 2.4 g of base, we can compute the neutralized grams of acid by applying the 1:1 molar ratio between them and their molar masses, 36.45 g/mol and 40 g/mol respectively as shown below by stoichiometry:

m_{HCl}=2.4gNaOH*\frac{1molNaOH}{40gNaOH}*\frac{1molHCl}{1molNaOH}*\frac{36.45gHCl}{1molHCl}\\   \\m_{HCl}=2.19gHCl

Best regards.

3 0
3 years ago
2 Na + Cl2 → 2 NaCl
Ksivusya [100]
Approximately 71.77 grams. I think so
8 0
3 years ago
Read 2 more answers
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