The product(s) of a heated reaction of N,N-ethylmethylpentanamide with sodium hydroxide would be __________. View Available Hint(s) The product(s) of a heated reaction of N,N-ethylmethylpentanamide with sodium hydroxide would be __________. sodium pentanoic acid and ethylmethylamine pentanoic acid and ethylmethylamine sodium propanoate and pentylamine sodium pentanoate and ethylmethylamine

Answer:

If the star has smaller mass than the Sun, it can fuse hydrogen into helium for at least a trillion years. The larger a star, the shorter its life because it fuses hydrogen into helium much more quickly. A star whose mass is more than 20 Suns will run out of hydrogen in only a few hundred million years.

Answer: The average atomic mass of nitrogen is 14.0066 amu

Explanation:

Mass of isotope N-14 = 14.00307 amu

% abundance of isotope N-14= 99.64% = [tex]\frac{99.64}{100}[/tex]

Mass of isotope N-13 = 15.0001 amu

% abundance of isotope N-13= (0.36)% = [tex]\frac{0.36}{100}[/tex]

Formula used for average atomic mass of an element :

[tex]\text{ Average atomic mass of an element}=\sum(\text{atomic mass of an isotopes}\times {{\text { fractional abundance}})[/tex]

[tex]A=\sum[(14.00307)\times \frac{99.64}{100})+(15.0001)\times \frac{0.36}{100}]][/tex]

[tex]A=14.0066amu[/tex]

Therefore, the average atomic mass of nitrogen is 14.0066 amu

Answer:

794 mmHg

Explanation:

We are going to be using the Combined Gas Law for this problem as well. Just to refresh out memory - the Combined Gas Law expresses the relationship between pressure, volume, and temperature (in KELVIN) of a fixed amount of gas. The equation itself? Right here: [tex]\frac{P_{1}V_{1}}{T_{1}} = \frac{P_{2}V_{2}}{T_{2}}[/tex]

Now, looking at the problem, let's assign the values to its corresponding variable:

P1 = 800mmHg; V1 = 5.0L; T1 = -50°C + 273 = 223K

V2 = 7.0L; T2 = 37°C + 273 = 310K; P2 = ?

We are looking to find the new pressure, a.k.a. P2. So, let's plug and chug the values into the equation.

Set up: [tex]\frac{(800 mmHg)(5.0L)}{223K} = \frac{(7.0L)(P_{2})}{310K}[/tex]

==> [tex]\frac{(800 mmHg)(5.0L)}{223K} * 310K = (7.0L)(P_{2})}[/tex]

==> [tex]P_{2} = \frac{(800 mmHg)(5.0L)}{223K} * \frac{310K}{7.0} }[/tex]

==> [tex]P_{2} =[/tex] 794.36 = 794 mmHg

Answer: -3.6

Explanation:

The lowest pH of -3.6 is the lowest known for any water in the environment

Answer:

14.01 amu

Explanation:

Step 1: Given data

Isotope     Atomic mass (am)    Abundance (ab)

 ¹⁴N           14.00307 amu          99.64% (0.9964)

 ¹⁵N           15.0001 amu             0.36% (0.0036)

Step 2: Calculate the average atomic mass (aam) of nitrogen

We will use the following expression.

aam = ∑ am × ab

aam = 14.00307 amu × 0.9964 + 15.0001 amu × 0.0036 = 14.01 amu

Answer:

0.083 M

Explanation:

We'll begin by calculating the number of mole in 0.43 g of KHP (potassium hydrogen phthalate, C₈H₅O₄K). This is can be obtained as follow:

Mass of C₈H₅O₄K = 0.43 g

Molar mass of C₈H₅O₄K = (8×12) + (5×1) + (16× 4) + 39

= 96 + 5 + 64 + 39 = 204 g/mol

Mole of C₈H₅O₄K =?

Mole = mass / molar mass

Mole of C₈H₅O₄K = 0.43 / 204

Mole of C₈H₅O₄K = 0.002 mole

Next, we shall determine the number of mole of NaOH required to react with 0.43 g (i.e 0.002 mole) of KHP. This can be obtained as follow:

C₈H₅O₄K + NaOH → C₈H₄O₄KNa + H₂O

From the balanced equation above,

1 mole of KHP reacted with 1 mole of NaOH.

Therefore, 0.002 mole of KHP will also react with 0.002 mole of NaOH.

Next, we shall convert 24.11 cm³ to L. This can be obtained as follow:

1000 cm³ = 1 L

Therefore,

24.11 cm³ = 24.11 cm³ × 1 L / 1000 cm³

24.11 cm³ = 0.02411 L

Finally, we shall determine the molarity of NaOH. This can be obtained as follow:

Mole of NaOH = 0.00 2 mole

Volume = 0.02411 L

Molarity of NaOH =?

Molarity = mole /Volume

Molarity of NaOH = 0.002 / 0.02411

Molarity of NaOH = 0.083 M

Answer:

check below

Explanation:

You can find the empirical formula of phosphorus oxide

  P                         O

____                   ____

1.347g                  1.744

1.347/ 31            1.744/ 16

0.043                  0.109

0.043/ 0.043   0.109/ 0.043

1                     :        2.5

2                    :         5

P2O5

We're given the [OH⁻] as 8.34 × 10⁻¹² M. Using the formula pOH = -log[OH⁻], the pOH of this solution would be -log(8.34 × 10⁻¹²) ≈ 11.08.

The pOH is, for lack of a better term, the "opposite" of pH: A pOH of 7 is neutral; a pOH less than 7 is basic; and a pOH greater than 7 is acidic.

This follows from the relation, pH + pOH = 14. In this case, with a pOH of 11.08, our pH would be 14 - 11.08 = 2.92, which is acidic (pH < 7).

Thus, the correct answer choice is B.

Answer:

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Answer:

[tex]1190\ \text{mL}[/tex]

Explanation:

[tex]M_1[/tex] = Initial Concentration of KCl = 2.7 M

[tex]V_1[/tex] = Volume of KCl = 1 M

[tex]M_2[/tex] = Final concentration of KCl = 1 M

[tex]V_2[/tex] = Amount of water

We have the relation

[tex]M_1V_1=M_2V_2\\\Rightarrow V_2=\dfrac{M_1V_1}{M_2}\\\Rightarrow V_2=\dfrac{2.7\times 700}{1}\\\Rightarrow V_2=1890\ \text{mL}[/tex]

The amount of water that is to be added is [tex]1890-700=1190\ \text{mL}[/tex].

Answer:

3

Explanation: good luck dude I believe in u

Answer:

The periodic table has been there for such a long time and how it is helpful in all science it is the element itself. How the element is used in real life. For example, oxygen is used in the atmosphere. Plants use carbon in order to covert it into oxygen more like that

Answer:

Not sure sorry :(

Explanation:

Answer:

The answer would be B. 1 joule/s.

Explanation:

The answer is B because the power in general is normally defined as energy over time. Watts are defined as 1 Watt = 1 Joule per second (1W = 1 J/s) which means that 1 kW = 1000 J/s.

Another reason why it's B is because I had the same exact question in class, I took a screenshot of it a day ago:

Hope this helps

I think it's true.

Explanation:

Muscles move bones through contracting and relaxing

Answer:

esterification reaction in which an alcohol and a carboxylic acid react to form an ester

Explanation:

Esterification involves the reaction of  an alcohol and a carboxylic acid  to form an ester. This is an analogue of amidation which involves the reaction of a carboxylic acid with an amine to form an amide.

The relationship between the two reactions is that in both cases, the carbonyl (CO) group of the carboxylic acid is maintained and then bonded to a new moiety in the product. Water is formed in both reactions.

Hence, for esterification;

RCOOH + ROH ------> RCOOR + H2O

For amidation;

RCOOH + RNH2 -------> RCONHR + H2O

Answer:

c balance

Explanation:

if you weigh something, you prove it's there.

Answer:

Explanation:

Psalm 23 vs 1 : The Lord is my Shepherd, I shall not want.

Answer:

#CarryOnLearning

Answer:

[tex]from \: the \: equation \\ 1 \: moles \: of \: propane \: produce \: 4 \: moles \: of \: water \\ 2.50 \:moles \: of \: propane \: will \: produce \: ( \frac{(2.50 \times 4)}{1} ) \: moles \\ = 10 \: moles \: of \: water[/tex]

Answer:

1.1 g Na2SO4

Explanation:

First convert mL to L. Then multiply by the Molarity to get moles, then multiply by the molar mass to get grams.

15 mL x     1 L       x       0.50 mol Na2SO4     x        142 g        =          1.1 g

              10^3 mL                 1 L                                   mol                     Na2SO4

In a formula unit, there are 48 gram of Na2SO4 atoms of each element. In terms of molar mass (gram mass unit): 45.98 g Na2SO4 in total 142.04 g sodium sulphate

A mole of sodium sulphate is created when two moles of sodium (45.98 g), one mole of sulphur (32.06 g), and four moles of oxygen (64.00 g) are combined (142.04 g).

The atomic mass of sodium sulphite is equal to 10 moles times the molecular mass, or 1260 grams. Consequently, 1260 grams are the mass of 10 moles of sodium sulphite (Na2SO4).

We first obtain the atomic weights of the different elements in a periodic table in order to compute the molar mass of a molecule. Then, we multiply the total number of atoms by each one's atomic mass. Finally, we calculate the molar mass by combining all the atomic masses.

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Answer: structural

Explanation:

When metals and non metals combine in fixed proportion then a chemical compound is formed. Structural formula shows an element symbol for each atom and a line for each bond between atoms. The correct option is option A.

Chemical formula is a formula where cation and anion combine to form a molecule in fixed proportion. Metals combine in form of cation and non metals combine in form of anion.

Cation is the species that give electron and attain positive charge while anion is a species which gain electron and attains negative charge so when anion and cation combine in fixed ration the the overall charge of the molecule is zero that is molecule is neutral.

Out of given structural is a 3D representation of any chemical formula, in which symbol of each element is shown .Along with symbol line for each bond between atoms is also shown.

Therefore, the correct option is option A.

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Answer:

0.24 M

Explanation:

We'll begin by writing the balanced equation for the reaction. This is illustrated below:

H₂SO₄ + 2NaOH —> Na₂SO₄ + 2H₂O

From the balanced equation,

The mole ratio of the acid, H₂SO₄ (nₐ) = 1

The mole ratio of the base, NaOH (n₆) = 2

Finally, we shall determine the molarity of the acid. This can be obtained as follow:

Volume of acid, H₂SO₄ (Vₐ) = 17.4 mL

Molarity of base, NaOH (M₆) = 0.20 M

Volume of base, NaOH (V₆) = 41.51 mL

Molarity of acid, H₂SO₄ (Mₐ) =?

MₐVₐ / M₆V₆ = nₐ / n₆

Mₐ × 17.4 / 0.2 × 41.51 = 1 / 2

Mₐ × 17.4 / 8.302 = 1 / 2

Cross multiply

Mₐ × 17.4 × 2 = 8.302

Mₐ × 34.8 = 8.302

Divide both side by 34.8

Mₐ = 8.302 / 34.8

Mₐ = 0.24 M

Therefore, the molarity of the acid is 0.24 M

Answer:

2.34

Explanation:

Answer:

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Explanation:

4×738×8<#329×

Answer:

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B.the electrons become delocalized and form a "sea"

Answer: comet

Explanation: :)

Answer:

Wind

Explanation:

Wind turbines make energy by the movement of the natural force on earth called 'wind' and renewable resources are resources that can be made from natural and environment-safe objects or things (e.g. Water, Geothermal Heat, The Sun, and Wind)