1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
frosja888 [35]
4 years ago
12

Ethanol blended fuel contains more oxygen, which make the emissions less harmful to the environment (results in more complete co

mbustion).
Chemistry
1 answer:
Vera_Pavlovna [14]4 years ago
5 0

Answer:

True

Explanation:

True

Ethanol is non-toxic, water soluble and biodegradable substance containing 35% oxygen, Ethanol blended fuel contains more oxygen gives more complete fuel combustion and reducing harmful tailpipe emissions. Ethanol  displaces toxic gasoline components like benzene, a carcinogen.

You might be interested in
A student found the mass of an object to be 5.5 g. The actual mass of the object is 5.3 g. What is the percent error in the meas
Salsk061 [2.6K]

Answer: 3.6%

5.5 - 5.3 and divide it by 5.5. Then multiply this by 100

Explanation:

This will get you 3.6%

8 0
3 years ago
Read 2 more answers
How many kilograms of a fertilizer are made of pure P2O5 would be required to supply 1.69 kilogram of phosphorus to the soil?
Alekssandra [29.7K]

Answer:

3.89 kg P2O5 must be used to supply 1.69 kg Phosphorus to the soil.

Explanation:

The molecular mass of P2O5 is

P2 = 2* 31 =           62

O5 = 5 *<u> 16 =         80</u>

Molecular Mass = 142

Set up a Proportion

142 grams P2O5 supplies 62 grams of phosphorus

x    kg P2O5        supplies 1.69 kg of phosphorus

Though this might be a bit anti intuitive, you don't have to convert the units for this question. The ratio is all that is important.

142/x = 62/1.69            Cross multiply

142 * 1.69 = 62x           combine the left

239.98 = 62x               Divide by 62

239.98/62 = x

3.89 kg of P2O5 must be used.

3 0
3 years ago
How does this action cause the skateboarder's speed to decrease?
Hitman42 [59]

Answer:

The answer is B

Explanation:

B is your answer hopes this helps you

7 0
3 years ago
Which are disadvantages of renewable resources? Check all that apply.
Ainat [17]

Answer:

Wind: Inconsistent power supply is one of the biggest drawbacks of utilizing wind turbines to generate electricity.

Solar: The main disadvantage of solar energy is cost, particularly in the start-up phase.

Explanation:

7 0
4 years ago
1. 51.2 g of NaClO (pKa of HClO is 7.50) and 25.3 g of KF (pKa of of HF is 3.17) were combined in enough water to make 0.250 L o
Andrews [41]

Answer:

* pH=11.0

* [HClO]_{eq}=9.32x10^{-4}M

* [HF]_{eq}=5.07x10^{-6}M

Explanation:

Hello,

At first, the molarities of NaClO and KF are computed as shown below:

M_{NaClO}=\frac{51.2g*\frac{1mol}{74.45g} }{0.250L}=2.75M \\\\M_{KF}=\frac{25.3g*\frac{1mol}{58.1g} }{0.250L} =1.74M

Now, since both NaClO and KF are ionic, one proposes the dissociation reactions as:

NaClO\rightarrow Na^++ClO^-\\KF\rightarrow K^++F^-

In such a way, by writing the formation of HClO and HF respectively, due to the action of water, we obtain:

ClO^-+H_2O\rightleftharpoons HClO+OH^-\\F^-+H_2O\rightleftharpoons HF+OH^-\\

Now, the presence of OH⁻ immediately implies that Kb for both NaClO and KF must be known as follows:

Kb=\frac{Kw}{Ka} \\Kb_{NaClO}=\frac{1x10^{-14}}{10^{-7.50}}=3.16x10^{-7}\\Kb_{KF}=\frac{1x10^{-14}}{10^{-3.17}}=1.48x10^{-11}

In such a way, the law of mass action for each case is:

Kb_{NaClO}=3.16x10^{-7}=\frac{[HClO][OH]^-}{[ClO^-]}=\frac{(x_{ClO})(x_{ClO})}{2.75-x_{ClO}}\\Kb_{KF}=1.48x10^{-11}=\frac{[HF][OH]^-}{[F^-]}=\frac{(x_{F})(x_{F})}{1.74-x_{F}}

Now, by solving for the change x for both the ClO⁻ and F⁻ equilibriums, we obtain:

x_{ClO}=9.32x10^{-4}M\\x_{F}=5.07x10^{-6}M

Such results equal the concentrations of OH⁻ in each equilibrium, thus, the total concentration of OH⁻ result:

[OH^-]_{tot}=9.32x10^{-4}M+5.07x10^{-6}M=9.37x10^{-4}M

With which the pOH is:

pOH=-log(9.37x10^{-4})=3.03

And the pH:

pH=14-pOH=11.0

In addition, the equilibrium concentrations of HClO and HF equals the change x for each equilibrium as:

[HClO]_{eq}=x_{ClO}=9.32x10^{-4}M

[HF]_{eq}=x_{F}=5.07x10^{-6}M

Best regards.

6 0
3 years ago
Other questions:
  • A student is measuring the volumes of nectar produced by a flowering plant for an experiment. He measures nectar from 50 flowers
    6·1 answer
  • How does carbon differ from neon
    8·2 answers
  • In your own words, describe the region around the atom
    7·2 answers
  • As a temperature of Lava increases, ___________.
    7·2 answers
  • What is the velocity of a ball falling with 100 joules
    14·1 answer
  • Blood alcohol concentration (BAC) is a measure of alcohol in your body, expressed as grams of alcohol per 100ml of blood. For a
    7·1 answer
  • Which of the following is an element?
    10·2 answers
  • Potassium hydrogen phthalate, KHP, is used as a primary standard for determining the concentration of a solution of NaOH by titr
    11·1 answer
  • 1s22s22p63s23p64s13d10 which element is this
    12·1 answer
  • HELP ASAP!!!
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!