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The two ways in which humans have negatively affected groundwater are Fertilizers and pesticides.

Fertilizers were chemical substances that are applied to crops in order to boost their yield.

Pesticides are chemicals that are being used to keep pests at bay. Herbicides, insecticides, nematicides, and molluscicides are examples.

Fertilizers and pesticides applied to the land, manure from livestock as well as other animals, landfills, mining operations, even unintended releases such as chemical spills or storage tank leaks are all factors that affect groundwater quality.

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Answer:

Oxide of manganese, Potassium permanganate, Manganese bromide and manganese oxide.

Explanation:

1. Manganese dioxide

Its chemical formula is [tex]$MnO_2$[/tex]. It is +4 oxidation state. It is a black solid which is fairly stable.

2. Potassium permanganate

Its chemical formula is [tex]$KMnO_4$[/tex]. It is commonly used in the laboratories as oxidizing agent. They appear black in color.

3 Manganese bromide

Its chemical formula is [tex]$MnBr_2$[/tex]

4. Oxides of manganese

Chemical formula is [tex]$Mn_3O_4$[/tex]

The most stable state of Manganese is +2 oxidation state.

Answer:

How to differentiate between physical and chemical change?

Physical and Chemical Changes to Matter

Physical changes only change the appearance of a substance, not its chemical composition.

Chemical changes cause a substance to change into an entire substance with a new chemical formula.

Chemical changes are also known as chemical reactions.

Answer:

false

Explanation:

Answer:Consider the reaction N2(g) + 3H2(g) =; 2NH3(g). If hydrogen gas is added to this system at equilibrium, will the reaction shift towards reactants

Answer:

shortest wavelength - gamma rays

highest wavelength - radio waves

Explanation:

Look at the electromagnetic spectrum

Answer:

I don't use your question?

Answer:

Explanation:

Cobalt bromate is the name of this compound

The name of the given compound is Cobalt(III) bromate.

Explanation:

While naming compounds of a transition element :

Given

The molecule formula of a compound[tex]Co(BrO)_3[/tex]:

To find:

The name of the given compound formula

Solution:

The charge on the cobalt ion = +3

The charge on the bromate ion = -1

Cation in formula = [tex]Co^{3+}[/tex] = Cobalt cation

Anion in the formula= [tex]BrO^{-}[/tex] = Bromate ion

So, the name of the given compound is Cobalt(III) bromate.

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Answer: The precipitate is formed because one of the compounds is insoluble. In double replacement reactions, the positive ions and the negative ions of the two dissolved reactants switch places to form the precipitation reaction.

Explanation:

Answer:

1. Students need to measure masses of the items.

2. Put baking soda and vinegar in a plastic bag and close it.

3. Mix the two, allowing for a reaction to occur.

4. Figure the mass of the plastic bag while the two components are inside.

5. The combined mass should be equal to what each weighed on their own.

Explanation:

total mass of the products is equal to the total mass of the reactants

The law of conservation of mass states that the total mass of the products must be equal to the total mass of the reactants , during a chemical reaction.

10 g baking soda, 30 mL vinegar, an electronic balance, and a resealable plastic bag .

CH3COOH + NaHCO3 = CH3COONa + CO2 + H2O

1. Since we now the amount of baking soada and that of vinegar,, we weigh the plastic bag.then Pour the  baking soda into the vinegar in a plastic bag and close it.

2. We mix the two by rubbing the plastic bag for proper mixing and  the reaction to occur.

3.The reaction forms sodium acetate, with the the evolution of trapped co2 gas and water.

 4. we weigh the plastic bag together with the products formed inside the  

We would find out that  The combined mass of the products would be equal to what each component weighed  on its  own.

Mass of reactants (baking soda + vinegar) = Mass of products (Sodium acetate + Carbon dioxide+ water)

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lichen because it lives with the bacteria

But pH is quite an important measurement of water. Maybe for a science project in school you took the pH of water samples in a chemistry class ... and here at the U.S. Geological Survey we take a pH measurement whenever water is studied. Not only does the pH of a stream affect organisms living in the water, a changing pH in a stream can be an indicator of increasing pollution or some other environmental factor

Answer: 1169.298 L

Explanation: In order to go from grams to liters, you must find the moles first using the molar mass, 62.068 g/mol (found via google search). I will assume the ethylene glycol is in gas form so we can use the 22.4 L per mol conversion.

Using dimensional analysis, starting with the kg, we must convert to grams, then moles, then liters.

[tex]\frac{3.24 kg}{} * \frac{1000g}{1 kg} * \frac{1 mol}{62.068 g} * \frac{22.4 L}{1 mol}[/tex]

Multiply the top individually, then the bottom individually.

[tex]\frac{72576}{62.068}[/tex]

Divide out.

[tex]= 1169.298 L[/tex]

In the end, we get 1169.298 L of ethylene glycol.

Answer:

D

Explanation:

Answer:true

Explanation:

This statement is correct

Answer:

J.J.Thomson discovered negatively charged particles by cathode ray tube experiment in the year 1897. The particles were name electrons.

Answer:

The correct option is have a partial negative charge

Explanation:

Since electronegativity can be described as the measure of the tendency of atom to attract electrons towards itself, the more electronegative atom in a covalent bond will have a partial negative charge. This is because, in covalent bond, there is sharing of electrons between participating atoms, the atom that has a higher electronegativity tends to attract the shared electrons towards itself making it slightly negative charge.

NOTE: The negative charge is partial and thus is not represented while drawing a covalent bonding diagram as this could be misinterpreted to mean an electrovalent bond if the charge is indicated.

Answer:

i need to answer five questions very sorry

Explanation:

i dont even have a clue

Answer:

I believe it means two molecules of oxygen.

Explanation:

The name for the molecular oxygen model is o2 and when you place a number in front of the element, it tells how many molecules there are of that element.  In this case, there are two molecules.

I would like to apologise in advance if this was incorrect.    

It is impossible to generate or destroy matter. As long as nothing exits the system, the total mass determined at the beginning of the reaction will match the total mass determined at the conclusion of the reaction.

A material called matter is made up of several kinds of particles, occupies space, and has inertia. The many sorts of particles each have a unique mass and size according to the fundamentals of current physics. The electron, proton, and neutron are three examples of material particles that are most well-known.

Antoine Lavoisier discovered in 1789 that mass is neither generated nor destroyed in chemical processes, which led to the formulation of the Law of Conservation of Mass.

That is to say, the mass of any one element at the start of a reaction will be equal to that element's mass at the conclusion of the reaction.

However, mass may appear to change if the chemical reaction takes place in an open system.

Thus, It is impossible to generate or destroy matter.

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Answer:

Shift it to the right toward the products,

Explanation:

Adding more reactant will increase the concentration of the reactants, to offset this increased concentration, more products will be formed.

Answer:

well u see the offspring of asexual production will be identical to the parent because it only needs 1 parent where as sexual production requires 2 parents so it would look like both parents

Answer:

The number of protons in the nucleus of the atom is equal to the atomic number (Z).

The number of electrons in a neutral atom is equal to the number of protons.

Hope it worked

Answer: a coarse-grained, dark-colored, intrusive igneous rock. It is usually black or dark green in color and composed mainly of the minerals plagioclase and augite.

Explanation: I hope that helped. HAVE HOPE

Answer:

zince hypohlorite

Explanation:

Answer:

Zince Hypohlorite

Answer:

It is the D. Atp

Explanation:

Have a good day

Answer:

Options pls

Explanation:

Answer:

The piece of wood will sink

Explanation:

If an object has a density higher than water, it will sink, and the piece of wood is more dense than water when measured.

Answer:

Explanation:

1 billion carbon atoms = 10⁹ carbon atoms .

33% were burnt

67 % remained behind .

67 % of 10⁹ = 6.7 x 10⁸

6.02 x 10²³ atoms = 1 moles

6.7 x 10⁸ atoms = 6.7 x 10⁸ / 6.02 x 10²³

= 1.11 x 10⁻¹⁵ moles

Answer:A

Explanation: because The nucleus directs all of the cell's activities, including reproduction.