what is mass in grams of 175 mL of salt water with a density of 1.30 g/cm3

Answer:

This question lacks options, the options are;

A. Absorption of heat

B. A chemical change

C. A physical change

D. Formation of a new compound

The answer is C. A physical change

Explanation:

A physical change is a type of change that does not involve the chemical composition of the substance(s) involved. Physical changes affect the form but not the chemical content of a substance. Examples of physical changes are freezing, change of state, boiling etc.

In this question, a liquid is cooled during an investigation causing it to solidify. The cooling of this liquid represents a PHYSICAL CHANGE because the liquid state of the substance is only changed to a solid state but does not involve changing the chemical composition of the substance.

A liquid is cooled during an investigation physical change causing it to solidify.

Physical change occurs whenever there is difference in the appearance of any object observed.

In the question it is given that during an investigation a liquid is cooled down which results in the solidification of that liquid. During that change state of material changes from liquid state to the solid state, which is an example of a physical change.

Hence, in the question physical change occurs.

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Answer:

location

topography (quality)

other facilities close by e.g gas station (it is not advisable to live close to a gas station, incase of explosion)

Answer:

school district, daily commute, neighborhood character, property value, nearby amenities

nutrient enriched plankton i believe! :)

Answer: The number of bonds that an element can form is determined by the number of electrons in its valence shell. Similarly, the number of electrons in the valence shell also determines ion formation.

Explanation:

Answer:

The indroduction of lizards in this marshy habitat may lead to severe alterations of its own ecosystem. Since the lizards and frogs are both species who feed on small insects, the insect population might begin to decrease around the area. Furthermore, if insects have lessened in the marsh, that means food for the lizard as well as for the frog. In an extreme scenario, unless the two species adapt to these new conditions, their population may rapidly decrease.

Answer:

Small frogs living in a marshy region feed on small insects in the region. The relationship between the frogs and insects is a  commensal-host  relationship. A particular species of lizards is introduced into the marshy land. These lizards also start feeding on these insects. The introduction of lizards may lead to  competition between lizards and frogs for food .

Answer: Element 1

Explanation:

If an element has 3 valence shells, then it must be in the third column so element 1 is the right answer. Hope this helps! :)

Answer:

2 to 1

Explanation:

The reaction equation is given as:

    2KHCO₃  →   K₂CO₃  + CO₂  + H₂O

The conversion factor between the moles of KHCO₃ and  K₂CO₃ is 2 to 1.

From the balanced chemical equation, we find out that;

     2 moles of 2KHCO₃ will produce 1 mole of  K₂CO₃.

So given any mole of either of the reactant  or product, we can find the unknown.

Answer:

An attraction between the positive end of one molecule and the negative end of another

Explanation:

The molecular shape affects the polarity as:

A. If the molecule contains nonpolar bonds, a bent shape will make it polar.

The sub-atomic math of a particle influences its extremity. Every CO bond has a dipole second, however they point in inverse bearings so the net CO2 atom is nonpolar. Conversely, H2O is polar in nature of the fact that the OH bond minutes don't offset.

Thus, option A is correct.

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mol CO₂ = 9.6

mol N₂ = 4.8

mol O₂ = 0.8

mol H₂O = 8

Reaction

4C₃H₅O₉N₃ → 12CO₂ + 6N₂ + O₂ + 10H₂O

mol CO₂

[tex]\tt \dfrac{12}{4}\times 3.2=9.6[/tex]

mol N₂

[tex]\tt \dfrac{6}{4}\times 3.2=4.8[/tex]

mol O₂

[tex]\tt \dfrac{1}{4}\times 3.2=0.8[/tex]

mol H₂O

[tex]\tt \dfrac{10}{4}\times 3.2=8[/tex]

Answer:

True

Explanation:because of the motion

Answer: repair and renew wounds effectively

~replacing lost cells, such as a shed skin cell

~allows for growth

~allows for reproduction

Explanation:

The cell cycle includes the various events in which a  cell matures by increasing length and shape, cell replicates its genome and prepare itself for cell division.

The cells divide and replace the old and damaged cells in the multicellular organisms. Multicellular organisms are those organisms which have more than one cell.

This also helps in replacing the lost cells and helps in removing the shedding the skin cell.

This process is also useful for cellular growth and reproduction.

Answer:

an acid

Explanation:

Hydrochloric acid or muriatic acid is a colorless inorganic chemical system with the formula HCl. Hydrochloric acid has a distinctive pungent smell. It is classified as strongly acidic and can attack the skin over a wide composition range, since the hydrogen chloride completely dissociates in an aqueous solution. Wikipedia

Answer:

Explanation:

Edmentum

The arrangement of electrons within an atom's orbitals is known as its electronic configuration. The atomic number, which is equal to the number of protons in every neutral atom, is the set quantity of electrons that make up each neutral atom.

The distribution of an element's atoms' electrons throughout several atomic orbitals is symbolically represented by the electronic configuration of that element.

A standardized nomenclature is used for expressing electron configurations, in which the energy level and type of orbital are written first, followed by the number of electrons in the orbital, which is expressed in superscript.

The correct matches are:

Zn: [Ar] 3d¹⁰ 4s²

Fe: [Ar] 3d⁶ 4s²

Sn: [Kr] 4d¹⁰5s²5p²

Cl: [Ne] 3s² 3p⁵

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Answer:

As you begin your trip down the hill you increase your speed resulting in a transformation from potential energy to kinetic energy.

Explanation:

At the top of the mountain, you have potential energy. But as you start moving down the mountain, your speed increases and have a lot of kinetic energy.

Answer:

They are both alive organisms. They can breathe and they are known as living creatures. The stay in the same place and food comes to them and they dont hunt for food. They are both like traps.

Explanation:

Explanation:

The different subatomic particles in an atom are the:

Protons and neutrons are located in the nucleus of an atom which is the tiny center of the atom.

Electrons orbits around the nucleus and fill the rest of the volume of atom.

Answer:

The greenhouse effect

Explanation:

The greenhouse effect is a straightforward method that heats the Earth's exterior. When the Sun's rays touch the Earth's environment, some of it is bounced back to space and the rest is grasped and re-heated by greenhouse gases. The consumed energy heats the environment and the exterior of the Earth.

Answer:

Chemically combined and cannot be separated

Explanation:

1)A minimum of two atoms combine to form a molecule.

2)Atoms are combined via chemical reactions thus chemically combined. Sodium+Chlorine

e.g Na+Cl—>NaCl²

Answer:

Elements

Explanation:

Each kind of atom is an element. Elements are pure substances that cannot be broken down into simpler substances by ordinary chemical means.

Answer:

Elements

Explanation:

Elements such as those on the periodic table are unable to be broken down into simpler forms.

Mixtures (both homogenous and heterogenous) are made of multiple elements making it able to be physically broken down back to its original elements.

Compounds are also made up of multiple elements, however it must go through a chemical separation process in order for it to be broken down into its original elements.

Matter is a broad term of any substance. So it could both be a combination or a single element making it incorrect for this question.

Answer:

the 18 columns are labeled “Group” Figure 2. Elements in the periodic table are ... differ dramatically in their chemical and physical properties, but some elements are ... The groups can also be referred to by the first element of the group.

Explanation:

Answer:

xcvbn

Explanation:

nkj

Answer:

what he said

Explanation:

There are various kind of elements that are present in periodic table. Some elements are harmful, some are radioactive, some are noble gases. If an element with no electrons to share belongs to noble gas family.

Periodic table is a table in which we find elements with properties like metals, non metals, metalloids and radioactive element arranges in increasing atomic number.

Periodic table help a scientist to know what are the different types of elements are present in periodic table so that they can discover the new elements that are not being discovered yet.

Noble gas is the group 18 elements whose octet is complete and they are not ready to give or take electrons from other element. They are very much stable on its own.

Therefore if an element has no electrons to share and is stable then that element belongs to group 18 or noble gas family.

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Answer:

A, Condensation

Explanation:

I got it correct :)

Answer:

D. light energy nuclear energy chemical potential energy

Explanation:

Energy transformation that takes place in plants when they change sun solar energy into plant glucose, is :

Light energy (by sunlight) to nuclear energy , chemical potential energy (glucon energy in plant cell - used by plants to make food).

Answer:

2457.6

Explanation:

I calculated the answer and got it right.

Answer:0.213 J/g°C

Explanation:

To calculate specific heat of the metal, the formula is used:

Q = m × c × ∆T

Where Q = amount of heat

m = mass

c = specific heat

∆T = change in temperature

Explanation:

Answer:

3. Granite and Gneiss.

Gneiss is a coarse to medium grained banded metamorphic rock formed from igneous or sedimentary rocks during regional metamorphism. Banded gneisses called migmatites are composed of alternating light colored layers of granite or quartz feldspar and dark layers rich in biotite.

Granite is a purely natural stone that comes directly from stone quarries and is then cut into thin slabs, polished, and fabricated into countertops. So-called quartz countertops are engineered stone products that may contain a large percentage of natural quartz but may also include other minerals.