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STatiana [176]
3 years ago
13

Which of the following is NOT a testable hypothesis?

Chemistry
2 answers:
Leto [7]3 years ago
6 0
Gravity is caused by a magical force
sertanlavr [38]3 years ago
6 0

Answer:

The correct option is Gravity is caused by a magical force

Explanation:

Scientific hypothesis is a logical and realistic explanation to a particular concept or observation which can be experimented upon. Magic is a form of illusion created either as a trick or via some supernatural powers to achieve some aims.

Gravity is an established force is science that CANNOT be attributed to magic since science does not seek to prove illusions especially via trick or supernatural powers.

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Which of the following is a product formed when Ag2O decomposes?
ASHA 777 [7]

The product formed when Ag2O decompose is O2 ( answer c)

explanation

Decomposition involve separation of a single chemical compound into two ore more elemental parts Ag2O decomposes to yield Ag and O2

that is 2Ag2O→ 4Ag + O2

2 moles of Ag2O decomposes to yield 4 moles of Ag and 1 mole of O2

6 0
3 years ago
Read 2 more answers
List the 5 signs of a CHEMICAL REACTION
SVETLANKA909090 [29]
Color change, formation of a precipitation, formation of a gas, odor change, temperature change
6 0
3 years ago
A truck is moving at the rate of 40 km/hr. How far does it move when it stops after 5 seconds?
seraphim [82]
First of all, this is the chemistry section, while your question is a physics question. Anyway I'll tell you how to solve it.

First we need to find the rate that the truck moves in a second.

1km = 1000m
40km = 40000m
40000m/hr
1 hour = 60 minutes
40000m/hr ÷ 60 = 666.66(repeating)/minute
1 minute = 60 seconds
666.66m/min ÷ 60 = 11.11(rep)m/s

Next we simply multiply the speed of the truck by the number of seconds it travels.

11.11 × 5 = 55.55
Make sure to round it unless you indicate the repeating decimal.
The truck moved 55.56m in 5 seconds.
6 0
2 years ago
A 2.6 liter container of nitrogen had a pressure of 3.2 atm. What volume will the gas occupy at a pressure of
Dominik [7]

Answer:

A sample of oxygen gas occupies a volume of 250. ... volume will it occupy at 800. torr pressure? ... A 2.0 liter container of nitrogen had a pressure of 3.2 atm. ... A sample of hydrogen at 1.5 atm had its pressure decreased to 0.50 atm producing

Explanation:

8 0
3 years ago
The chemical equation shows the production of magnesium chloride.
Norma-Jean [14]

Answer:

1 gram of H2 will be produced from 12 grams of Mg.

Explanation:

According to Stoichiometry, 0.5 moles of Mg are present. 1 mole of Mg produces 1 mole of H2, so 0.5 moles of Mg will produce 0.5 moles of H2. Multiplying molar mass of H2 i.e. 2 gram/mole with 0.5 moles, we can find the mass of H2 in grams which is 1 gram.

3 0
3 years ago
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