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allochka39001 [22]
3 years ago
11

Which tools would Sara use to find an irregularly shaped object’s mass and volume?

Chemistry
2 answers:
gulaghasi [49]3 years ago
8 0
We need more information to answer this question...
galben [10]3 years ago
7 0

Answer: (D) a balance, water and a beaker

Explanation:

did it online got 100%

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What does the prefix trans-indicate?
fredd [130]

Answer:

B. The carbons on either side of the double bond are Pointed in opposite directions

7 0
3 years ago
Balance the following chemical equation<br> Na+I2-&gt;NaI
jenyasd209 [6]

Balanced equation : 2Na+I₂⇒2NaI

<h3>Further explanation </h3>

Equalization of chemical reactions can be done using variables. Steps in equalizing the reaction equation:

• 1. gives a coefficient on substances involved in the equation of reaction such as a, b, or c, etc.

• 2. make an equation based on the similarity of the number of atoms where the number of atoms = coefficient × index (subscript) between reactant and product

• 3. Select the coefficient of the substance with the most complex chemical formula equal to 1

Reaction

Na+I₂⇒NaI

  • Give coefficient :

aNa+bI₂⇒NaI

  • Make an equation :

Na, left=a, right=1⇒a=1

I, left=2b, right=1⇒2b=1⇒b=0.5

Equation becomes :

Na+0.5I₂⇒NaI x 2

2Na+I₂⇒2NaI

3 0
3 years ago
What is the mole to mole relationship between copper and zinc? Cu2+(aq)+-&gt;Cu(s)+Zn2+(aq)
Aliun [14]

The reaction is missing the Zn(s) in the reactants. The stoichiometry of the copper/zinc is 1 mole to 1 mole

5 0
4 years ago
How many moles are in 3.555 g of c2h2?
Juli2301 [7.4K]

Answer:

0.13653499904751903

Explanation:

Convert Units .com

5 0
3 years ago
For the reaction 4FeCl2(aq) + 3O2(g) → 2Fe2O3(s) + 4Cl2(g), what volume of a 0.945 M solution of FeCl2 is required to react comp
Mnenie [13.5K]

Answer:

0.01M

Explanation:

Given paramters:

Volume of FeCl₂ = ?

Concentration = 0.945M

Number of molecules of O₂ = 4.32 x 10²¹molecules

Solution:

The balanced reaction equation is given below:

           4FeCl₂ + 3O₂ → 2Fe₂O₃ + 4Cl₂

Now, to solve the problem we use mole relationship between the compounds.

We work from the known to the unknown compounds. Here, the known is the oxygen gas because from the given parameters we can estimate the number of moles of the reacting gas.

  number of moles of O₂ = \frac{number of elementary of particles}{6.02 x 10^{23}}

number of moles of O₂ =  \frac{4.32 x 10^{21}}{6.02 x 10^{23}}

number of moles of O₂ = 0.007mole

now, from the reaction equation we find the number of moles of the FeCl₂:

   3 mole of O₂ reacted with 4 moles of FeCl₂

0.007mole of O₂ reacted with \frac{4 x 0.007}{3} = 0.0096mole O₂

Now to find the volume of FeCl₂ we use the expression below;

       volume of FeCl₂ = \frac{number of moles}{concentration}

                                   =  \frac{0.0096}{0.945}

                                    = 0.01L

7 0
3 years ago
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