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kotykmax [81]
2 years ago
15

A particular car has a gas mileage of 24.5 miles per gallon. If the cost of gas is $4.25 per gallon, and the car travels at a co

nstant speed of 35 miles per hour, what is the cost to drive for 300 minutes?
Chemistry
1 answer:
tester [92]2 years ago
3 0

Answer:

$30.39

Explanation:

alot of math

You might be interested in
Joyce poured 200 milliliters (mL) of water into a beaker, placed a thermometer in it, and heated it until it started to boil. Sh
earnstyle [38]

Answer:

100°C

Explanation:

The boiling point of water is 100°C and the difference is when will the water start boiling.

3 0
2 years ago
What mass of solid NaOH (97.0 % by mass) is required to prepare 1.00 L of a 10.0% solution of NaOH by mass? The density of the 1
Lelechka [254]

<u>Answer:</u> The mass of 97 % of NaOH solution required is 114.33 g

<u>Explanation:</u>

To calculate mass of a substance, we use the equation:

\text{Density of substance}=\frac{\text{Mass of substance}}{\text{Volume of substance}}

We are given:

Density of 10 % solution = 1.109 g/mL

Volume of 10% solution = 1 L = 1000 mL     (Conversion factor:  1 L = 1000 mL)

Putting values in above equation, we get:

1.109g/mL=\frac{\text{Mass of }10\%\text{ solution}}{1000mL}\\\\\text{Mass of }10\%\text{ solution}=1109g

The mass of 10 % solution is 1109 g.

To calculate the mass of concentrated solution, we use the equation:

c_1m_1=c_2m_2

where,

c_1\text{ and }m_1 are the concentration and mass of concentrated solution.

c_2\text{ and }m_2 are the concentration and mass of diluted solution.

We are given:

c_1=97\%\\m_1=?g\\c_2=10\%\\m_2=1109g

Putting values in above equation, we get:

97\times m_1=10\times 1109\\\\m_1=114.33g

Hence, the mass of 97 % of NaOH solution required is 114.33 g

3 0
2 years ago
Which pair of statements below is correct? Multiple Choice An octet is formed via ionic bonding when one or more valence electro
tresset_1 [31]

Answer:

An octet is formed via ionic bonding when one or more valence electrons are transferred from one atom to another.

An octet is formed via covalent bonding when valence electrons are shared between atoms.

An octet is always formed via ionic bonding

Explanation:  The essence of bonding is stability. An octet or duplet state is formed when one or more valence electrons are shared. when the electrons are shared, the type of bond formed is a covalent bond. An octet is formed via ionic bonding when one or more valence electrons are transferred from one atom to another.

3 0
2 years ago
Read 2 more answers
Which postulate of Dalton's theory is consistent with the following observation concerning the weights of reactants and products
hram777 [196]

<u>Answer:</u> This illustrates law of conservation of mass.

<u>Explanation:</u>

Dalton's theory is based on mainly two laws which are law of conservation of mass and law of constant proportion.

Law of conservation of mass states that mass can neither be created nor be destroyed but it can only be transformed from one form to another form.

This also means that total mass on the reactant side must be equal to the total mass on the product side.

The chemical equation for the decomposition of calcium carbonate follows:

CaCO_3\rightarrow CaO+CO_2

We are given:

Mass of calcium carbonate = 100 grams

Mass of calcium oxide = 56 grams

Mass of carbon dioxide = 44 grams

Total mass on reactant side = 100  g

Total mass on product side = 56 + 44 = 100 g

As, the total mass on reactant side is equal to the total mass on product side.

Thus, this illustrates law of conservation of mass.

6 0
2 years ago
in sample of elemental bromine, 55% or the atoms are Br-79, and the remainder are Br-81. if this sample is typical of naturally
Gwar [14]

Answer:

The average atomic mass of bromine is 79.9 amu.

Explanation:

Given data:

Percentage of Br⁷⁹ = 55%

Percentage of Br⁸¹ = 45%

Average atomic mass of bromine = ?

Formula:

Average atomic mass = [mass of isotope× its abundance] + [mass of isotope× its abundance] +...[ ] / 100

Now we will put the values in formula.

Average atomic mass = [55 × 79] + [81 ×45] / 100

Average atomic mass = 4345 + 3645 / 100

Average atomic mass = 7990 / 100

Average atomic mass = 79.9 amu

The average atomic mass of bromine is 79.9 amu.

3 0
2 years ago
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