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dezoksy [38]
3 years ago
7

Fifth grade chemistry please help me with this. The questions are related to each other and are attached to the problem.

Chemistry
2 answers:
Juli2301 [7.4K]3 years ago
8 0
What Grant felt was something known as a ‘static current’. Experiencing a light electrical shock when you touch another person, (in this case when Grant touched Olivia) is when electrons move quickly towards the protons.
r-ruslan [8.4K]3 years ago
8 0

Answer:

This might not be right but. It could be the motion of olivia when she was walking through the room she could of made a static or force to make the shock

Explanation:

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What is the mass of oxygen in 300 grams of carbonic acid (H2CO3)
DENIUS [597]

mass of carbonic acid = 300g

molar mass of H2CO3 = 2H + C + 3 O

= 2 x 1.008+ 12.01 + 3 x  16

= 62.03g/mol


moles of H2CO3 = mass/Molar mass

= 300/62.03

= 4.8364 moles


1 mole H2CO3 has 3 moles Oxygen


4.8364 moles H2CO3 contains  

=   3 x 4.8364  moles Oxygen  =   14.509 moles Oxygen


moles = mass/Molar mass


mass of oxygen = moles x Molar mass of Oxygen

= 14.509 x 16

= 232.15g Oxygen

mass of oxygen in 300g of carbonic acid(H2CO3) = 232.15g

7 0
3 years ago
This is science help me pls
jek_recluse [69]
Remember velocity = distance/time so that mean you would do 60/3 which equals 20 so the speed(velocity) equals 20
6 0
2 years ago
Which of the following statement(s) about chemical bonding
spin [16.1K]

Answer:B

Explanation:

6 0
3 years ago
A hot cup of coffee (treat it like water) rests on a windowsill. If it cools off from 90 C
kakasveta [241]

Answer:

1721.8ml

Explanation:

90-30=60

103,310÷60=1721.83333333

1721.83333333= 1721.8

5 0
3 years ago
Read 2 more answers
What is the hydrogen ion and hydroxide ion concentration for a pOH of 3.557? Is the solution an acid or a base?​
UkoKoshka [18]

Answer:

Hydrogen ion concentration is 2.773E-4Mole per DM3

Hydroxide ion concentration is 4.093E-11

It is an acid

Explanation:

PH(H3O)=-LogH3O

PH=3.557

H3O=antilog of -3.557

antilog of -3.557=antilog (0.443 -4)

antilog0.443 ×antilog -4=2.773E-4mole per DM3.

(H3O)(OH)=10^-14

H30=2.773×10^-14

OH= 1.00E-14/2.773E-4

=4.093E-11

it is an acid since the concentration of hydrogen ion is more than the hydroxide ion

4 0
3 years ago
Read 2 more answers
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