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vlada-n [284]
3 years ago
7

What is the chemical that had polluted flints drinking water supply

Chemistry
1 answer:
Ber [7]3 years ago
5 0

Answer:

Lead

Explanation:

While taking sample from flint's distillery, theybfoind 13000 ppb or parts per billion lead in the water itself

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a graduated cylinder is filled to 41.5 mL with water and a piece of granite is placed in the cylinder, displacing the level to 4
Maksim231197 [3]

Answer:

The answer is

<h2>6.1 cm³</h2>

Explanation:

To find the volume in cm³ we must first find the volume of the rock .

To find the volume of the rock , subtract the initial volume of water from the final volume of the water when the rock was dropped in it

That's

volume = final volume of water - initial volume of water

volume of rock = 47.6 mL - 41.5 mL

= 6.1 mL

Next we use the conversion

<h3>1 mL = 1 cm³</h3>

If 1 mL = 1 cm³

Then 6.1 mL = 6.1 cm³

Hope this helps you

8 0
4 years ago
Why does increasing the temperature of two reactants in solution make a
gogolik [260]
The two molecules will only react if they have enough energy. By heating the mixture, you are raising the energy levels of the molecules involved in the reaction. Increasing temperature also means the molecules are moving around faster and will therefore "bump" into each other more often.
5 0
3 years ago
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The data were collected over five spring seasons. What is the difference between the number of frogs in the pond when the rainfa
Lunna [17]

Answer: they like deep water

Explanation: they do

3 0
3 years ago
In an accident, a solution containing 2.5 kg of nitric acid was spilled. Two kilograms of Na2CO3 was quickly spread on the area
storchak [24]

First we must write a balanced chemical equation for this reaction

Na_2CO_3 _(_a_q_)+ 2HNO_3_(_a_q_) \implies 2NaNO_3_(_s_) + CO_2_(_g_) + H_2O_(_l_)

The mole ratio for the reaction between HNO_3 and Na_2CO_3 is 1:2. This means 1 moles of Na_2CO_3 will neutralize 2 moles HNO_3. Now we find the moles of each reactant based on the mass and molar mass.

2500g HNO_3 \times \frac{mol}{63.01g\ HNO_3} = 39.67 mol\ HNO_3

2000g\ Na_2CO_3 \times \frac{mol}{105.99g \ Na_2CO_3} = 18.87 mol\ Na_2CO_3

\frac{18.87 mol Na_2CO_3}{39.67\ HNO_3} = \frac{1 molNa_2CO_3}{2 mol HNO_3}

The Na_2CO_3 was enough to neutralize the acid because 18.87:39.67 is the same as 1:2 mol ratio.

4 0
4 years ago
How many ounces are in a 1 cup?​
Morgarella [4.7K]
There is 8oz for each cup
3 0
4 years ago
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