What is reactivity series of metals rearrange the following metals in an increasing order of reactivity aluminum Zinc mercury?

The activity of metals is the reactivity they show towards a chemical reaction. The activity series of metal is a list of metals arranged in decreasing order of reactivity to displace hydrogen gas from water and acid solutions. Increasing order of reactivity: Mercury, Zinc, Aluminium.

Which one of the following is most reactive towards electrophilic substitution reaction?

In series of activating group OH comes first then OCH3, hence, phenol is most reactive towards electrophilic substitution reaction.

Why do my clothes come out dirty after washing?

If you use too much detergent, it can leave a filmy residue on your clothes even after washing. To make sure you’re using the correct amount: Follow machine recommendations for how much detergent to use. Soap manufacturers want you to use more product, so you have to buy refills more often.

Do laundry pods freeze?

Tide pods have very little water in them. They never freeze. The constituents of the detergent don’t allow the pods to freeze. Moreover, Tide pods are encapsulated in a thin film.

Can you drink hydrochloric acid?

Ingesting concentrated hydrochloric acid can cause pain, difficulty swallowing, nausea, and vomiting. Ingestion of concentrated hydrochloric acid can also cause severe corrosive injury to the mouth, throat esophagus, and stomach, with bleeding, perforation, scarring, or stricture formation as potential sequelae.

What happens when wood burns in a fire?

When wood comes in contact with fire, it sets off a series of complex chemical reactions. The combustion of wood results in the release of carbon dioxide, water vapor and various gaseous products, as well as the formation of black solid residues like charcoal and ash.

Which color in the visible spectrum of hydrogen has the least energy?

The visible photons in the hydrogen spectrum are the Balmer series lines. The lowest energy and longest wavelength photon corresponds to the 3→2 transition and is red.

Which is better ACEA C2 or C3?

Example – an ACEA C2 engine oil will provide better fuel economy that an ACEA C3 engine oil, but may not provide the same protection levels due to the lower film strength. ACEA C grade oils are for the most, not interchangeable with one another depending on the particular applications.

Can I use C3 instead of C2 oil?

Example – an ACEA C2 engine oil will provide better fuel economy that an ACEA C3 engine oil, but may not provide the same protection levels due to the lower film strength. ACEA C grade oils are for the most, not interchangeable with one another depending on the particular applications.

Why e-waste is hazardous?

E-waste is hazardous because the components used to make devices such as laptops, cell phones, and televisions, contain metals and chemicals known to harm human health. Children, who are especially vulnerable to the effects of e-waste, often work, live, and play in or near e-waste recycling centers.

Why do bubbles make a pop sound?

On a fundamental level, sound is a pressure wave. The air inside a bubble is under more pressure than the air outside it, as it is compressed by the surface tension of the bubble film – that is, until it bursts.

What can melt salt?

When added to ice, salt first dissolves in the film of liquid water that is always present on the surface, thereby lowering its freezing point below the ices temperature. Ice in contact with salty water therefore melts, creating more liquid water, which dissolves more salt, thereby causing more ice to melt, and so on.

When a metal reacts with an acid displacement reaction takes place and a gas is produced that burns with a pop sound identify the gas produced?

Metals readily react with acid and produce hydrogen gas which burns with a pop sound. Metals are placed above hydrogen in reactivity series and displace it during a reaction with an acid. As acids have a property of giving H+ ions. A resultant is formed with release of hydrogen gas.

What is the chemical reaction of rust?

The chemical formula for rust is Fe2O3 and is commonly known as ferric oxide or iron oxide. The final product is a series of chemical reactions simplified below as- The rusting of the iron formula is simply 4Fe + 3O2 + 6H2O → 4Fe(OH)3. The rusting process requires both the elements of oxygen and water.

What are the differences in engine oils?

Thin oils have lower viscosity and pour more easily at low temperatures than thicker oils that have a higher viscosity. Thin oils reduce friction in engines and help engines start quickly during cold weather. Thick oils are better at maintaining film strength and oil pressure at high temperatures and loads.

What is the best grade of motor oil?

Comparison of the best engine oils for 2022Engine oil nameBest engine oil overallMobil 1 Extended PerformanceBest engine oil overall runner-upCastrol GTX MagnatecBest synthetic engine oilPennzoil Ultra Platinum Full SyntheticBest synthetic engine oil runner-upAmsoil Signature Series Synthetic•Feb 11, 202.

Whats better thicker or thinner oil?

Thin oils have lower viscosity and pour more easily at low temperatures than thicker oils that have a higher viscosity. Thin oils reduce friction in engines and help engines start quickly during cold weather. Thick oils are better at maintaining film strength and oil pressure at high temperatures and loads.

What happens when sodium is left exposed to air and moisture?

Sodium metal reacts with the oxygen in air to form sodium oxide, and traces of yellowish sodium peroxide. The sodium oxide formed will then react with water vapour in the air to give sodium hydroxide film. The sodium hydroxide formed is hygroscopic which means it absorbs moisture from the air.

What is the best oil to put in your engine?

Comparison of the best engine oils for 2022Engine oil nameBest engine oil overallMobil 1 Extended PerformanceBest engine oil overall runner-upCastrol GTX MagnatecBest synthetic engine oilPennzoil Ultra Platinum Full SyntheticBest synthetic engine oil runner-upAmsoil Signature Series Synthetic•Feb 11, 202.

Which series of sublevels is arranged in order of increasing energy?

The order of increasing energy of the sublevels: 1s 2s 2p 3s 3p 4s 3d 4p 5s 4d 5p 6s 4f 5d 6p 7s 5f 6d … This order corresponds to the order in which the energy sublevels are filled by electrons.

Should you use thicker oil in an older engine?

A: Yes. This is a practical method to improve oil pressure in an older, high-mileage engine. The slightly thicker oil film from the heavier base weight oil – 10W – can help protect worn engine bearings as well.

Why does salt turn orange?

From this study, it was found that due to heat and the presence of a sacrificial antioxidant component in the packaging film, potassium iodate was reduced to elemental iodine (I2) turning packaged salt samples to a yellow/orange color.

How does air intake manifold work?

Featuring a series of tubes, the intake manifold ensures that the air coming into the engine is evenly distributed to all the cylinders. This air is used during the first stroke of the combustion process. The intake manifold also helps cool down the cylinders to prevent the engine from overheating.

Is using thicker oil better for older engines?

A: Yes. This is a practical method to improve oil pressure in an older, high-mileage engine. The slightly thicker oil film from the heavier base weight oil – 10W – can help protect worn engine bearings as well.

Is it better to have thicker or thinner oil?

Thin oils have lower viscosity and pour more easily at low temperatures than thicker oils that have a higher viscosity. Thin oils reduce friction in engines and help engines start quickly during cold weather. Thick oils are better at maintaining film strength and oil pressure at high temperatures and loads.