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Nina [5.8K]
3 years ago
8

18. How far does Larry move if traveling at 2m/s for 100s?

Chemistry
1 answer:
saw5 [17]3 years ago
4 0

Answer:

200 m

Explanation:

Given data:

Speed of larry = 2 m/s

Time taken = 100 s

Distance travelled = ?

Solution:

Formula:

d = st

d = distance

s = speed

t = time

by putting values,

d = 2 m/s× 100 s

d = 200 m

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Write the net ionic equation for any precipitation reaction that may be predicted when aqueous solutions of calcium iodide and c
Hitman42 [59]

<u>Answer:</u> The net ionic equation is written below.

<u>Explanation:</u>

Net ionic equation of any reaction does not include any spectator ions.

Spectator ions are defined as the ions which does not get involved in a chemical equation. They are found on both the sides of the chemical reaction when it is present in ionic form.

The chemical equation for the reaction of calcium iodide and chromium (III) sulfate is given as:

3CaI_2(aq.)+Cr_2(SO_4)_3(aq.)\rightarrow 3CaSO_4(s)+2CrI_3(aq.)

Ionic form of the above equation follows:

3Ca^{2+}(aq.)+6I^{-}(aq.)+2Cr^{3+}(aq.)+3SO_4^{2-}(aq.)\rightarrow 3CaSO_4(s)+2Cr^{3+}(aq.)+6I^-(aq.)

As, chromium and iodide ions are present on both the sides of the reaction. Thus, it will not be present in the net ionic equation and are spectator ions.

The net ionic equation for the above reaction follows:

3Ca^{2+}(aq.)+3SO_4^{2-}(aq.)\rightarrow 3CaSO_4(s)

Hence, the net ionic equation is written above.

8 0
3 years ago
PLease help me with this question
lukranit [14]
The answer is 6 because the number of chlorine is 2 so if you have 6 moles of chlorine the answer is 6
7 0
3 years ago
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valentinak56 [21]

Answer:

CaC2 + 2H2O → C2H2 + Ca(OH)2

thats it

Explanation:

8 0
3 years ago
How could you tell if a sample of matter is an element
Citrus2011 [14]
Test it by checking it's hardness, texture, and how it stands against other substances.
8 0
3 years ago
During chemistry, Dan mixes two clear, colorless solution and mixing them produces a yellow precipitate in a clear, colorless fi
Andrei [34K]

Answer: Formation of precipitate indicates that there has been a chemical reaction.

Explanation:

Chemical reaction:  It is defined as change in arrangement of the atoms so as to form a new substance.

Mixing of two clear solutions that is lead nitrate and potassium iodide gives out yellow solid precipitate of lead iodide with aqueous solution of potassium nitrate.

Pb(NO_3)_2(aq)+2KI(aq)\rightarrow PbI_2(s)+2KNO_3(aq)

The physical evidence which indicates that chemical reaction has been taken place is formation of yellow solid precipitate of lead iodide ,(PbI_2).


6 0
4 years ago
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