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3 years ago

Please i need it Lab: Calorimetry and Specific Heat

Chemistry

2 answers:

likoan [24]3 years ago

7 0

Answer:

step3:

aluminum- 11.98

copper-12.14

iron- 12.31

lead- 12.46

step5: 12.46, 52.31, 39.85

step7: 100, 22.4, 27.1, 4.7, 72.9

step5: 12.26, 52.49, 40.13

step7: 100, 22.7, 24.6, 1.9, 75.4

step5: 12.42, 52.66, 40.24

step7: 100, 22.5, 24.9, 2.4,75.1

step5: 12.34, 51.99, 39.65

step7: 100, 22.6, 23.3, 0.7, 76.7

step8: 0.90,0.35,0.44,0.12

Ulleksa [173]3 years ago

5 0

Answer:

its correct on edge

Explanation:

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PLEASE HELP

neonofarm [45]

Answer:

The answer to your question is 0.10 M

Explanation:

Data

Molarity = ?

mass of Sucrose = 125 g

volume = 3.5 l

Formula

Molarity = moles / volume

Process

1.- Calculate the molar mass of sucrose

C₁₂H₂₂O₁₁ = (12 x 12) + (1 x 22) + (16 x 11)

= 144 + 22 + 176

= 342 g

2.- Convert the mass of sucrose to moles

342 g of sucrose ------------------- 1 mol

125 g of sucrose -------------------- x

x = (125 x 1) / 342

x = 0.365 moles

3.- Calculate the molarity

Molarity = 0.365 / 3.5

4.- Result

Molarity = 0.10

5 0

3 years ago

Q#5 Balance and list the coefficients from reactants to products.

skad [1K]

A. $2Fe_2O_3(s) +3C(s)$ → $4Fe(s) + 3CO_2(g)$

B. $2Al(s) + 3FeO(s)$ → $Fe(s) + 3Al_2O_3(s)$

C. $2Al(s) +3H_2SO_4(aq)$ → $Al_2(SO_4)_3(aq) + 3H_2(g)$

What is a balanced chemical equation?

An equation that has an equal number of atoms of each element on both sides of the equation is called a balanced chemical equation.

A. $2Fe_2O_3(s) +3C(s)$ → $4Fe(s) + 3CO_2(g)$

B. $2Al(s) + 3FeO(s)$ → $Fe(s) + 3Al_2O_3(s)$

C. $2Al(s) +3H_2SO_4(aq)$ → $Al_2(SO_4)_3(aq) + 3H_2(g)$

Learn more about the balanced chemical equation here:

brainly.com/question/15052184

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2 years ago

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Where would a primary producer be located in a food chain?

vfiekz [6]

Answer:

The primary producer would be at the bottom of the food chain.

Explanation:

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4 years ago

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Briefly describe four ways that a beam can be strengthened?

lara31 [8.8K]

Answer:

1. Changing Beam Material

2. Corrugation

3. Changing Beam form

4. Steel Reinforcing Bars

Explanation:

Changing Beam Material

Some materials are stronger when used in beams than others. Beams made of steel for instance are stronger than beams made of wood. Therefore changing material can improve the strength of the beam. It is quite important to take into account the weights of the material though as different structures have different requirements.

Corrugation.

You can fold the beam into triangular shapes to increase strength. If you look at roofs you will notice that they are folded and this increased their strength. The same logic can be applied to beams.

Changing Beam Form

Another way to make Beams stronger is to change their form or rather their shape. Straight beams are not as strong as I-beams for instance. I-beams look like the capital letter I with the lines at both ends. I-beams are usually used in construction which shows that they are quite strong.

Steel Reinforcing Bars

When placed in concrete beams, Steel Reinforcing Bars which are also called Rebar can help strengthen a beam by helping it withstand the forces of tension. A concrete beam with Rebar inside it is known as Reinforced Concrete.

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4 years ago

PLEASE HELP

Varvara68 [4.7K]

Ok measure atoms the answer is B

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3 years ago

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