In a laboratory experiment, John uses a mesh to separate soil particles from water. Which technique of separation is he using?
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It's a technique which is used for separation of solids and fluids by putting them through a medium which allow only fluid to pass through, leaving the solids (in this case the soil) alone.
The fluid that passed is called the filtrate
Related Questions
In a chemical reaction occurring in an open beaker, the reactants have a mass of 10.0 g and contain 1000 J of energy. The products in the beaker contain a mass of 5.0 g and 500 J of energy. Which best explains the difference in energy and mass as reactants are converted to products?
Chlorine melts at 172 k what is chlorines melting point in C
Help please more points1 Change 9.0 x 10^7 from scientific to standard notation 2 Change 3.2 x 10^-5 from scientific to standard notation3 Which types of measurements are appropriate for scientific notation? *The speed of lightThe speed of a snailThe speed of your car4 Write 0.0000000000372 grams in scientific notation. Then convert to SI base units. 5 Write 45,000,000,000 kilometers in scientific notation. Then convert your answer to SI base units6 A bulb thermometer gives an indoor temperature reading of 21 degrees Celsius. A digital thermometer in the same room gives a reading of 20.7 degrees Celsius. Which devise is more precise? Explain.
What kind of bond would a metal and a nonmetal typically make?A. An Ionic bond B. A Metallic bond C. A Double bond D. A Covalent bond
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3.44x10^23 divided by 6.02x10^23 equals 0.571 mol Cu.
not?
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The characteristics of the density we can find that the answer for the effect of sugar is;
- Densityincreases with increasing amount of sugar,
- The other costituents is not reaction with the sugar.
Density is the relationship between the mass and the volume of a body, this is a very useful relationship for fluid mechanics exercise.
Where ρ is the density, m the mass and V the volume
In this laboratory the liquid is possibly water since a solution is formed with the sugar, the volume of the solution does not change with the introduction of the solute (sugar), therefore the introduction of sugar creates a change in the mass of the solution.
Consequently, if the mass increases and the volume remains constant, the density should increase, possibly in a linear fashion with increasing mass.
The most important assumption is that the effect of the other ingredients of the drink is that it does not react with the sugar.
In conclusion using the density characteristics we find that the response for the sugar effect is;
- Density increases with increasing amount of sugar, assuming that there is no reaction between the sugar and the other constituents of the solution.
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Final answer:
The assumption is that other ingredients do not noticeably affect the density of the beverage, and changes in density are attributed solely to sugar content. The validity of this assumption would depend on various factors such as the densities and quantities of the other ingredients.
Explanation:
The assumption in this lab is that the other ingredients in the beverage do not significantly impact its density. This would imply that the changes in density observed are due solely to the sugar content. The validity of this assumption would depend on several factors. For instance, if the other elements are in relatively small quantities, or their densities are similar to that of the primary component (water in most beverages), the assumption may hold true. Nonetheless, it's important to point that this is an approximation, as in reality, every ingredient may contribute to the overall density.
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b. oxidizing agent
c. weak base or acid
d. strong base or acid
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Indicators are compounds which are weak bases or weak acids as they can dissociate into ions .The correct option is C.
Indicator is defined as a chemical substance which is chemically a weak acid or a weak base which changes it's color depending upon the concentration of hydrogen ions present in the solution.They dissociate slightly in water to produce ions.
These are generally derived from plant pigments and are of slightly acidic or basic in nature.There are three types of indicators:
1) natural indicators
2) synthetic indicators
3) olfactory indicators.
These are mainly used in determination of end point of titrations. Every indicator has it's pH range in which it can perform effectively.These are usually organic compounds.
As weak acids and bases are easily dissociated ,thus indicators are weak bases or weak acids.Thus, the correct option is C.
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It will take 8 electrons in its valence shell.
.How many electrons will it take in its valence shell？
This non-metal usually forms 2 covalent bonds. This leads me to believe that it has 6 valence electrons, to begin with, and will take 2 more, one from each bond. Such that it ends with a full valence shell of 8 electrons.
In covalent bonds, non-metals share electrons to attain full valence shells.
How many electrons are present in nonmetal in their outermost shell?
Most of the non-metals have 4 to 7 electrons in their valence shells. Formation of ions: Non-metals tend to accept electrons in their valence shell to form negatively charged ions called anions.
Learn more about valence shell here: brainly.com/question/15076797
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In covalent bonds, non-metals share electrons to attain full valence shells.
This non-metal usually forms 2 covalent bonds. This leads me to believe that it has 6 valence electrons to begin with and will take 2 more, one from each bonds. Such that it ends with a full valence shell of 8 electrons.
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Answer:
Ammonia has 4 regions of electron density around the central nitrogen atom (3 bonds and one lone pair). These are arranged in a tetrahedral shape. The resulting molecular shape is trigonal pyramidal with H-N-H angles of 106.7°.
Explanation:
1.) Calcium and Bromine
2.) Sodium and Fluorine
3.) Lithium and Chlorine
4.) Magnesium and Argon
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Ionic compounds are formed by IONS (Obviously, what am I, a dummy?)
There are two types of ions: anions and cations.
Anions can only be formed by nonmetals, and cations can only be formed by metals.
In order for ions to bond, there must be one anion and one cation, because opposite charges attract.
Let's look at your choices.
1) Ca + Br can form ionic bonds
2) Na + F can form ionic bonds
3) Li + Cl can form ionic bonds
However...
4) Mg + Ar
This is a special case. Ar is a NOBLE GAS, which means that it has the maximum number of valence electrons (8) in its outermost shell. Therefore, ANY type of bonding is IMPOSSIBLE.
Your answer should be 4) Mg + Ar