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3 years ago

Answer this FAST PLEASE IT WILL HELP ALOT AND THEIR IS 15 POINTS AND ILL GIVE BRAINLIEST!!

Chemistry

2 answers:

amm18123 years ago

8 0

Answer:

Explanation:

As fertilizer can run off into the reservoir and contaminate it with harmful chemicals

kolbaska11 [484]3 years ago

3 0

Answer:

Hey!

THE ANSWER IS C!

Explanation:

Excessive use of Fertilizers can have adverse effects on the water quality because it contains Nitrates, which are harmful for both Humans (if they drink the polluted water) and Aquatic Life (they cannot stand Nitrates so the excrete them instead)

HOPE THIS HELPS!!

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People should be more concerned about the global water budget than the local water budget.

Paraphin [41]

True because you shouldn’t be selfish and share with the world

7 0

3 years ago

4 pts

Digiron [165]

First we need to find the number of moles that 43.9g of gallium metal is. We can do this by finding the molar weight of gallium and cross-multiplying to cancel out units:

$\frac{1mole}{69.723g} *\frac{43.9g}{1} =0.63MOLga$

So we are dealing with 0.63 moles of gallium metal.

We can take from the balanced equation that 4 moles of gallium metal will react completely with 3 moles of oxygen gas. We can take this ratio and make a proportion to find the amount of oxygen gas, in moles, that will react completely with 0.63 moles of gallium metal:

$\frac{4molesGa}{3moles02} =\frac{0.63molesga}{xmoleso2}$

Cross multiply and solve for x:

4x=1.89

x=47 molesO₂

So now we know that 0.47 moles of oxygen gas will react with 43.9g of gallium metal.

7 0

3 years ago

An ideal gas in a sealed container has an initial volume of 2.65 L. At constant pressure, it is cooled to 25.00 ∘C, where its fi

svet-max [94.6K]

Answer:

Initial temperature was: $178.3^\circ \:C$

Explanation:

The Relation between the volume and temperature at constant pressure is:

$\frac{V_1}{T_1}=\frac{V_2}{T_2}\\\\\frac{2.65}{T_1}=\frac{1.75}{\left(25+273\right)}\\\\T_1=451.3\:K\quad\:or\:\quad 178.3^\circ\:C$

8 0

4 years ago

*SCIENCE*

4vir4ik [10]

The correct answer is option A, that is, cooler and more rigid outer portion.

The lithosphere of the Earth comprises the crust and the uppermost mantle that forms the rigid and hard outer layer of the Earth. The lithosphere is sub-differentiated into tectonic plates. The topmost section of the lithosphere, which chemically reacts with the hydrosphere, atmosphere, and biosphere via the soil producing procedure is known as the pedosphere. The lithosphere is situated above the asthenosphere that is the hotter, weaker, and deeper component of the upper mantle.

8 0

3 years ago

Them empirical formula of an artificial sweetener is c14h18n2o5 the molecular mass is 294.34 what is the molecular formula

nadezda [96]

C14H18N2O5
In limiting reactions and chemical reactions.

3 0

3 years ago