What is the name of this hydrocarbon? a skeletal model has 2 central carbons bonded to c h 3 at each end, and at the left of the 2 central carbons. 3-isopentane 2-methylbutane 3-methylbutane 1,2-methylpropane

c. A sulfide ion has 2- charge because it gaines two electrons

thia statement is true.

The molarity of the 500 mL KOH solution needed to neutralize the 40 mL of 2.50 M HCl is 0.2 M

HCl + KOH —> KCl + H₂O

From the balanced equation above,

The mole ratio of the acid, HCl (nA) = 1

The mole ratio of the base, KOH (nB) = 1

MaVa / MbVb = nA / nB

(2.5 × 40) / (0.15 × Vb) = 1

100 / (Mb × 500) = 1

Cross multiply

Mb × 500 = 100

Divide both side by 500

Mb = 100 / 500

Mb = 0.2 M

Thus, the molarity of the KOH solution needed is 0.2 M

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Answer:

why is most space exploration accomplished with spacecraft that do not have crews on board? humans face many challenges in space. what is one advantage of using an orbiter to study objects in space? can be used for long periods of time.

Answer:

N2 and NH3 both have 3 so try one of those ones

Answer:

Flammable liquid is any liquid having a flashpoint at or below 199.4 °F (93 °C).

Explanation:

:)

Flashpoints for flammable liquids are at 100°F. Lower flash points allow for easier ignition of liquids. A liquid's flash point is the lowest temperature at which a concentrated enough layer of vapor accumulates on top of its surface to allow for ignition.

A liquid that is flammable has a flash point* below 37.8 ° C (100 ° F). A flammable liquid has a flash point that ranges from 37.8 to 93.3° C (100 to 200° F), which is above the standard working temperature. Flammable liquids emit a vapor that, at standard working temperatures, is easily ignitable.

The substance ignites more readily the lower the flash point. For instance, petrol is more flammable than ethylene glycol and has a flash point of about -40 degrees C (-40 °F).

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The moles of substances required to make scrambled eggs is given in the cooking recipe for scrambled eggs.

A mole of. a substance is the amount of that substance which contains the avogadro number (6.02 × 10^23) of particles in it.

A mole of a substance is usually given as a standard unit measurement of that substance.

The mass of 1 mole of is known as the molar mass if that substance.

From the recipe for preparing scramble eggs given, the moles of substances required are as follows:

Therefore, the moles of substances required to make scrambled eggs is given in the cooking recipe for scrambled eggs.

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Answer:

1.85 g of hydrogen gas will form!

Explanation:

1. Write the balanced equation.

Zn

+

2HCl

→

ZnCl

2

+

H

2

2. Calculate the moles of

Zn

.

Moles of Zn

=

30.0

g Zn

×

1 mol Zn

65.38

g Zn

=

0.4589 mol Zn

3. Calculate the moles of

H

2

.

Moles of H

2

=

0.4589

mol Zn

×

2 mol H

2

1

mol Zn

=

0.9177 mol H

2

4. Calculate the mass of

H

2

.

Mass of H

2

=

0.9177

mol H

2

×

2.016 g H

2

1

mol H

2

=

1.85 g H

2

Answer:

c changes in energy causes matter to change

Answer:

The pituitary gland is located below the brain. :)

Answer: Because most electrical wires have an outer coating so you don't get electrocuted when you touch them. You could ask why don't you get electrocuted when you touch a phone charger, same answer, same outer coating.

Answer:

The copper in electrical wires is a great conductor, and birds are not great conductors. So the energy will just bypass the birds and keeps moving along the wire.

Explanation:

Answer:

Wind pushes air parcels even higher in the troposphere, where it is colder. The air parcels will then lose more energy and more rain can happen.

Explanation:

Answer:

Wind propels air packages upward into the troposphere, which is cooler. As a result, the air packets will lose more energy and more rain may fall.

Explanation:

Answer:

3.97 psi

Explanation:

The new pressure can be found by using the formula for Boyle's law which is

P1 V1 = P2 V2

Answer:

Explanation:

Copepods. The single eye gave them the nickname of "cyclops"

Answer:

immediately flush the affected area gently with lukewarm water for at least 30 uninterrupted minutes

Explanation:

If strong acid comes into contact with the skin, immediately wash the affected area gently with lukewarm water for at least 30 minutes and get medical attention immediately.

Exposure to strong acids such as sulphuric acid can occur as skin contact, ingestion, or inhalation of vapors. Each kind of exposure can create serious hazards to health and should be managed quickly and appropriately by medical professionals to reduce damage and health risks.

If strong acid comes into contact with the skin, quickly flush the affected area gently with cold water for at least 30 minutes and seek medical attention immediately. If strong acid gets into your eyes, then flush the eye(s) with water for 30 minutes.

If accidentally ingest strong acid, rinse your mouth with water immediately. But do not induce vomiting and continually rinse your mouth with water. If you inhale strong acid aerosols, get fresh air, and medical attention immediately.

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Answer:

Soap and tomato juice :)

Explanation:

Using different types of pH levels may affect the results, so that is why I think this would be a good experiment to do. :)

Have an amzing day!!

Please rate and mark brainliest!!!

Answer:

Using litmus paper

Explanation:

Answer:

0.15 moles

Explanation:

6.7moles x 1 mole co2 over 44.01 g = 0.15 moles

Answer:

c

Explanation:

The innate immune system is the body's first line of defense against germs entering the body. It responds in the same way to all germs and foreign substances, which is why it is sometimes referred to as the "nonspecific" immune system

Answer:

it is charles's law

Explanation:

volume does matter with pressure

Answer:

it says tick the box next to the correct answer so it'd be right to tick the last box:

The particles of the gas slow down

Answer:

b. Individual atoms of argon

Explanation:

Hope this helps!

-Justin

For a Cu/Cu2+ concentration cell has a voltage of 0.21 V at 25 ∘C, the concentration  is mathematically given as

c1=2.7*10^6.77m

Generally, the equation for the Chemical reaction  is mathematically given as

Cu---->cu  +2^e    O

2e+Cu+2  ---->Cu    R

Therefore

[tex]Ecell=\frac{0.0591}{n}log(c2/c1)\\\\0.25=\frac{0.0591}{2}log(1.6*10^{-3}/c1)[/tex]

c1=2.7*10^6.77m

In conclusion, the concentration is

c1=2.7*10^6.77m

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Molar mass of NaCl:-

Now

The product of heating succinic acid is succinic anhydride, which is a structure with four carbon atoms, four hydrogen atoms, and three oxygen atoms.

If succinic acid is heated the initial reactant (succinic acid) releases water, which changes the identity of the substance as succinic acid becomes succinic anhydride.

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Uranium-235 which has a half-life of 713 million years will best suited in dating a fossil from Precambrian time.

Thi8s is defined as a trace of an animal or plant of a past geologic age that has been preserved in Earth's crust.

The Precambrian time occurred around 4.6 billions years ago and Uranium-235 which having a half-life of 713 million years means it's more useful when compared to carbon-14 which has a half life of 5,370 years.

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Answer:

The moles of potassium that you would need to prepare 1200 g of 5% potassium sulfate solution is 1.538 moles

Answer:

A) Nuculear

Explanation:

Nuclear powerplants are danguorous for the ecosystem and incase of an exsplosion nuclear is the hardest to recover from. Especially if you know the story about Chernobyl blow up. many animals began to grow diffrent mutations and evryone had to evacuate from having desieses and mutations.

Hoped this helped...

Based on the mechanism shown above, the correct rate law that is consistent with the sample reaction is [tex]B+D \rightarrow ^{k_{-1}} E+C[/tex].

Rate law can be defined as a chemical equation that is used to relate the initial (forward) chemical reaction rate with respect to the concentrations of both the chemical reactants and constant parameters.

Mathematically, the rate law is given by this formula:

[tex]R = K[A]^x[B]^y[C]^z[/tex]

Where:

Based on the mechanism shown above, the correct rate law that is consistent with the sample reaction is as follows:

                                       [tex]B+D \rightarrow ^{k_{-1}} E+C[/tex]

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