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allsm [11]
3 years ago
6

Which would be the best to neutralize a large acid spill in your school lab: sodium hydroxide or baking soda? Explain

Chemistry
1 answer:
igor_vitrenko [27]3 years ago
6 0
It is much better to use baking soda. Any acid that reacts with baking soda gives off carbon dioxide. Hence, you can see an endpoint through the fizzing. With this, you will know when to stop adding. If you use NaOH, you might add it to an acid that creates an exothermic reaction. For example, if the acid was sulfuric acid, it will create more heat which will lead to more unfortunate events. To be safe, you add baking soda to neutralize, then mix it with a bit of water.
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The balloon Spirit of Freedom, flown around the world by American Steve Fossett in 2002, contained 550,000 cubic feet of helium.
Elodia [21]
Assuming the balloon initially has volume of 0 when deflated, the total P(deltaV) = (1.00 atm)(550,000 ft^3) = 550,000 atm-ft^3. To convert into work units, we can first convert ft^3 to L:
(550,000 atm-ft^3)(1 m/3.28 ft)^3
= (15,586.2 atm-m^3)
Then we convert to L:
(15,586.2 atm-m^3)(1000 L/m^3)
= 15,586,200 atm-L
Then we convert to J:
(15,586,200 atm-L)(101.325 J / 1 atm-L)
= 1.579 x 10^9 J
3 0
3 years ago
A chemical equation is balanced by changing or adding
tresset_1 [31]
<span>A chemical equation is balanced by changing or adding C. numbers in front of molecules, which are called coefficients. 
For example:
O2 + 2 H2 ---> 2 H2O (number 2 is added to both sides in order to balance the equation)</span>
6 0
3 years ago
What atom has 2 electrons, 6 protons and 7 neutrons
Deffense [45]

Answer:

Carbon atoms with 7 neutrons have an atomic mass of 13 (6 protons + 7 neutrons = 13). These atoms are the isotope called carbon-13.Jul

7 0
2 years ago
If you begin with 4.0 grams of hydrogen and all of the oxygen that you need, how many grams of water can you make?​
yawa3891 [41]

    the water is 36 grams.

hope this helped

7 0
3 years ago
An artifact originally had 16 grams of​ carbon-14 present. the decay model upper a equals 16 e superscript negative 0.000121 ta=
xeze [42]

<u>Given:</u>

Initial amount of carbon, A₀ = 16 g

Decay model = 16exp(-0.000121t)

t = 90769076 years

<u>To determine:</u>

the amount of C-14 after 90769076 years

<u>Explanation:</u>

The radioactive decay model can be expressed as:

A = A₀exp(-kt)

where A = concentration of the radioactive species after time t

A₀ = initial concentration

k = decay constant

Based on the given data :

A = 16 * exp(-0.000121*90769076) = 16(0) = 0

Ans: Based on the decay model there will be no C-14 left after 90769076 years

3 0
3 years ago
Read 2 more answers
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