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4 years ago

Balance the following chemical equations.

Chemistry

1 answer:

solong [7]4 years ago

3 0

Answer:

1) 2,1,2

2) 2,2,1,1

3)2,1,2

4)2,2,3

5)2,3,1,3

6 [ I cannot answer that]

7)6,1,2

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What is 2.08 x 10^-3 in standard form

stepladder [879]

Explanation:

0.00208 is the correct standard form

6 0

3 years ago

Burning 1 kg of coal releases about 3 million joules of energy. If you could use all of the chemical energy to lift another kilo

Katarina [22]

I could lift 3.06 x 10⁵ m high

<h3>Further explanation </h3>

Energy is the ability to do work. Energy can change from one energy to another

Potential energy is the energy that an object has because of its position

The potential energy can be formulated:

Ep = m. g. h

E = potential energy of an object, joule

m = object mass, kg

g = gravity acceleration, m / s²

h = height of an object, m

energy of coal = 3.10⁶ J

mass = 1 kg

g = 9.8 m/s²

$\tt h=\dfrac{E}{m.g}\\\\h=\dfrac{3.10^6}{1\times 9.8}=3.06\times 10^5`m$

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3 years ago

The average blood volume in the human body is about 4.9 L. Convert this volume to cubic centimeters (cm3).a. milliliters (mL)b.

CaHeK987 [17]

Answer:

a. 4900 mL; b. 4900 cm³ c. 4.9x10⁻³ m³

Explanation:

1 L = 1 dm³

4.9 L = 4.9 dm³

1 dm³ = 1000 cm³ → 4900 cm³

1 cm³ = 1 mL (4900 mL)

1 dm³ = 1x10⁻³ m³ → 4.9x10⁻³ m³

6 0

3 years ago

Please help me out with these questions please!!!

iogann1982 [59]

Answer to the first one is that they are brittle. This is not true because they have strong bonds

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3 years ago

The free flow of electrons is responsible for

noname [10]

Answer:

An electrical phenomenon is caused by flow of free electrons from one atom to another. The characteristics of current electricity are opposite to those of static electricity. Wires are made up of conductors such as copper or aluminum.

Explanation:

from google

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3 years ago