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ioda
3 years ago
8

When solution A was mixed with solution B, the solution turned cloudy, the test tube did not feel warm, and there were no visibl

e bubbles. Identify the reaction type.Group of answer choicesprecipitationgas evolvingneutralizationno reactioncombustion
Chemistry
1 answer:
son4ous [18]3 years ago
3 0

Answer:

Precipitation reaction

Explanation:

Given that solution A was mixed with solution B, the solution turned cloudy. The test is not warm and no bubbles visible. This means that the precipiate is formed.

The concept is when two colourless solutions react to form a cloudy precipitate that settles at bottom of a solution then the reaction is said to be a precipitation reaction.

An example can be the Reaction of Silver nitrate with common salt.

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A 83.2 g sample of metal at 90.31 oC is added to 41.82 g of water that is initially at 19.93 oC. The final temperature of both t
MissTica

Answer: 0.2885J/g°c

Explanation:

Loss of heat of metal = Gain of heat by the water

Therefore

-Qm = +Qw

Where

Q = mΔTCp

Q = heat

M= mass

ΔT = T.f - Ti

Ti= initial temperature

T.f= final temperature

Cp= Specific heat (m is metal, w is water)

-Qm = +Qw

-[m(T.f-Ti)Cpm] = m(T.f-Ti)Cpw

Therefore

-[83.2g(28.42-90.31)Cpm] = 41.82g(28.42-

19.93)4.194J/g°c

Cpm = 1485.54÷ 5149.25

Cpm = 0.2885J/g°c

Therefore , the specific heat of the metal is 0.2885J/g°c

4 0
3 years ago
According to the periodic table, carbon has an atomic mass of 12.011 u. This indicates that the most abundant isotope of carbon
Eduardwww [97]
The most abundant of all of the isotopes of an element will be the one who's mass the mass of element is closest to. In this case, the mass of atomic carbon is closest to the mass of carbon-12.
Thus, Carbon-12 is the most abundant isotope.
3 0
4 years ago
Read 2 more answers
A block of aluminum weighing 200 g is cooled from 100C to 50°C with the release of 1080 joules of heat. From this data, calculat
babunello [35]

Answer:

0.108

Explanation:

You use the formula Q =mco

M is mass

Q is th heat release

C is specific heat

O is the temperature change

Substitute what you have and what you get in the information in the equation then you will get your answers

6 0
3 years ago
HELP ME please i need help with this
nadezda [96]
4)
a) Natural selection will work negatively against rabbits that only eat berries as the drought is preventing berries from growing. It wont have any negative impact on rabbits that only eat grass as the grass is still surviving.

b) The statement ‘population has variations’ is backed up by the fact that the rabbits eat different things. They aren’t all the same. The statement ‘some variations are favorable’ is backed up by the fact that the rabbits that only eat grass are able to survive the drought. Their variation in eating grass instead of berries let’s them live. The statement ‘a population will change over time’ is backed up by the fact that the rabbits that only eat berries will die out. This will not only change the size of the population but going forward will create a population that has more rabbits that eat only grass on account of natural selection.
7 0
3 years ago
What do u notice about the molecules before and after the chemical reaction
dimaraw [331]

Explanation:

In a chemical reaction, the atoms and molecules produced by the reaction are called products.

In a chemical reaction, only the atoms present in the reactants can end up in the products. No new atoms are created, and no atoms are destroyed.

In a chemical reaction, reactants contact each other, bonds between atoms in the reactants are broken, and atoms rearrange and form new bonds to make the products.

6 0
3 years ago
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