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the effect of ammonia treatment in field natural rubber (NR) latex with different STORAGE period time on the properties of concentrated NR latex and stability of skim latex was investigated. Fresh NR latex was treated with various ammonia contents such as 0.35, 0.60 and 0.80% w/w, and then they were centrifuged to get the concentrated NR latex with 60% dry rubber content (DRC) containing 0.16, 0.18 and 0.25% w/w, respectively and skim NR latex with roughly 5% DRC containing 0.42, 0.60 and 0.80% w/w, respectively. The effect of storage times with ∼0, 15, 30 and 45 days for concentrated NR latex with different ammonia contents on their properties such as alkalinity, magnesium content and viscosity was observed. It was found that generally, magnesium content in field NR latex and latex CONCENTRATE DECREASED with storage period times. The alkalinity content in both concentrated NR and skim latex increased with INCREASING ammonia content in field latex. The viscosity of concentrated NR latex increased as a function of storage period time of field NR latex. The stability of skim latex depends on storage period time of field NR latex with different AMMONIAS. The tensile strength of dipped films obtained from field NR latex with 0.80% w/w of ammonia was dependent on storage period time of field NR latex.

ANSWER:

Washing soda has more WATER COMPARATIVELY to soda ash

Explanation:

Washing Soda has more ph LEVEL and when KEPT in water it mixes with water more frequentley than washing ash

Answer:

It because if we do DIRECT CALCULATION such as

8.00362 X 5.01274

Its calculation will be complecated.

If we ROUND off i.e.

8.00362 = 8

and 5.012374 = 5

Now, the calculation will be easy.

Thats why, we round off the figure during calculations.

Explanation:

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ANSWER:

hhhshshshshshhshshshehhshauususu and ahhshghhhqqqqqqqqqqqqqqqqqq have to be GIVEN

EXPLANATION:

ffgffffffff is the gfffffffffffff and ftttyyui

ANSWER:

POISE or VISCOSITY coeffisent

Explanation:

Magnesium is a chemical element with the symbol Mg and atomic number 12. It is a shiny gray solid which bears a CLOSE physical resemblance to the other five elements in the second column of the periodic ... Wikipedia

Symbol: Mg

Atomic MASS: 24.305 u

Did you know: A whopping 13 percent of Planet EARTH's mass is MADE of magnesium.

Micelles only form above critical micelle temperature. For example, the value of CMC for sodium dodecyl sulfate in water (no other additives or salts) at 25 °C, atmospheric pressure, is 8x10−3 mol/L. With increase in concentration of surfactant there will be decrease in surface TENSION.

Explanation:

Sodium SILICATE is USED as an alum COAGULANT and an iron flocculant in wastewater treatment plants. Sodium silicate binds to colloidal molecules, creating larger AGGREGATES that sink to the bottom of the water column. The microscopic negatively charged particles SUSPENDED in water interact with sodium silicate

Explanation:

Ferric chloride is used in MANY industrial and SANITARY wastewater treatment applications, DUE to its HIGH efficiency, effectiveness in clarification, and utility as a sludge dewatering agent.

ANSWER:

due to difference in their masses

Explanation:

boiling point increases with INCREASE in mass.

because when C atom is added the SIGMA BOND is added which strengthen the bond

now it will require more energy to break the bond.

so the boiling point is HIGHER

Centrifugation SEPARATES the components of heterogeneous mixtures. These include LIQUIDS in liquids, solids in liquids, and solids and liquids in GASES. Centrifugation uses centrifugal force to MOVE dense components to the outside of the container. This causes the solid to settle more rapidly and completely.

Ch3-Ch2-Ch2-ChO it's REACTION with LIALH4 it GIVES

Ch3-Ch2-Ch2-Oh

your OPTIONS are wrong

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The FORMULA is √(s(s+1))h/2π

s is GIVEN as 3 in this question

so the value of orbital ANGULAR momentum is

√3h/π

ANSWER:

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ANSWER:

Most elements are metals, but quite a few are nonmetals. It's IMPORTANT to be ABLE to distinguish between the different types of elements. Here is a list of five metals and five nonmetals, an EXPLANATION of how you can tell them apart, and some examples of their USES.

ANSWER:

Na2s.Naf is not DEMONSTRATING LAW of MULTIPLE PROPORTION

EXPLANATION:

both MIXES and REACTS I THINK so

Answer:

when CHLORINE is PASSED through the slaked lime then BLEACHING POWDER is OBTAINED

EXPLANATION:

very NICE it is EASY......

......

ANSWER:

it gives zinc SULPHATE and copper

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Answer:

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ANSWER:

SEE answer in above PICTURE

NaCl i.e. sodium CHLORIDE is the formula for COMMON salt.

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PROVIDE a one sentence explanation. The O–H bonds are more ACIDIC than the N–H bonds, resulting in stronger HYDROGEN bonds for water and therefore a higher boiling point. ... Butane has the lowest boiling point because it only forms van der Waals interactions, while acetone can ALSO form dipole–dipole interaction

Explanation:

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The FILTER paper is a semi-permeable paper barrier placed perpendicular to a liquid or AIR flow. It is used to separate FINE substances from LIQUIDS or air.

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Answer:

4.Na2S,NaF

Explanation:

because SECOND ATOM are not samei.e s&f not obey LAW of multiple PROPORTION

EXPLANATION:

The filtrate is EVAPORATED to get the crystals of NaCl. For separating ammonium chloride from sand we used the method of SUBLIMATION. This method is used to separate solid mixtures in which one of the component can sublime on heating . The solid which sublimes ESCAPES as vapours while the other one is left behind .

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EXPLANATION:

Chromatography is USED for quality analyses and checker in the FOOD industry, by IDENTIFYING and separating, analyzing additives, vitamins, preservatives, proteins, and amino acids. Chromatography like HPLC is used in DNA fingerprinting and bioinformatics.

ANSWER:

4) both 1 and 3

this is the CORRECT answer

Explanation:

To Measure Internal Diameter And Depth Of A GIVEN Beaker/CalorimeterUsing Vernier calipers And HENCE Find Its Volume. Vernier caliper is ameasuring DEVICE that has two SCALES: the main scale and vernier scale such that the vernier scale SLIDES over the main scale.

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EXPLANATION:

PLEASE REFER to ATTACHMENT .

ANSWER:

we can DIFFERENTIATE the DIFFERENT COLOURS

ANSWER:

Ethanol's hydroxyl group CAUSES the molecule to be slightly basic. It is ALMOST neutral LIKE WATER. The pH of 100% ethanol is 7.33, compared to 7.00 for pure water

the PHYSICAL CHANGE : melting of CHOCOLATE

the CHEMICAL change: digision of food

ANSWER:

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Thallophyta- Includes all ALGAE e.g. chlamydomonas, volvox etc.Thallophytes are autotrophic as they contain chlorophyll.They have a thallus like BODY , ie.the plant body can not be distinguished into roots STEMS or LEAVES .They are primarily aquatic.

ANSWER:

methoxy group is ACTIVATING group and ORTHO,PARA directing group hence para product major

Explanation:

Suspensions and colloids are heterogeneous mixtures. A suspension is identifiable because its PARTICLES are LARGE and settle out of the dispersing medium due to the EFFECTS of GRAVITY. The dispersed particles of a COLLOID are intermediate in size between those of a solution and a suspension.

Answer:

3 STATES of MATTER are there SOLID liquid and gas.

Please give LIKES

Answer:

Solvent extraction is the partial REMOVAL of a substance from a solution or mixture by dissolving it in ANOTHER, immiscible solvent in which it is more soluble.

Distillation is the process of separating the components or substances from a LIQUID mixture by using selective BOILING and condensation. Distillation may result in ESSENTIALLY complete separation, or it may be a partial separation that increases the concentration of selected components in the mixture.

Explanation:

Answer:

Dehydrohalogenation is a chemical reaction that involves removal of (elimination of) a HYDROGEN halide from a SUBSTRATE. The reaction is usually associated with the SYNTHESIS of ALKENES, but it has wider applications.

Explanation:

Answer:

NUCLEUS -> It is the center of an atom which contain protons and neutrons

Shell -> the space where the probability of FINDING electrons is maximum in the atom is KNOWN as shells

there are mainly four shells KLMN

Answer:

POSITION of ISOTOPES- according to Mendeleev PERIODIC table isotopes of an element MUST be given SEPARATE places in the periodic table they have different atomic mass but they were not assigned separate places

ANSWER: 6.022x10^22 ATOMS

Explanation:

MOL MASS of N = 14g

14g N = 6.022x10^23 atoms

1.4g N = 6.022x10^23x1.4/14

= 6.022x10^22 atoms

ANSWER:

that DESTRUCTIVE distillation

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Answer:

Mercury(II) oxide, a red solid, decomposes when HEATED to PRODUCE mercury and oxygen GAS. A reaction is also considered to be a decomposition reaction even when one or more of the products are still COMPOUNDS. A metal carbonate decomposes into a metal oxide and carbon dioxide gas.

Explanation:

Answer:

In chemistry, Molecular orbital theory is a METHOD for describing the electronic structure of molecules using quantum mechanics. Electrons are not assigned to individual bonds between atoms, but are treated as moving under the influence of the NUCLEI in the WHOLE MOLECULE.

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Answer:

it's OPTION c sublimation.

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Answer:

ACID 0 to 6

Bases 8 to 14......,.

where as 7 is NEUTRAL