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grandymaker [24]
3 years ago
12

A student found the mass of an object to be 5.5 g. The actual mass of the object is 5.3 g. What is the percent error in the meas

urement?
Chemistry
2 answers:
Salsk061 [2.6K]3 years ago
8 0

Answer: 3.6%

5.5 - 5.3 and divide it by 5.5. Then multiply this by 100

Explanation:

This will get you 3.6%

Orlov [11]3 years ago
3 0

Answer:

3.8%

Explanation:

For future students i took the test and this is correct. I found out the hard way so take my word :)

hope i helped

-lvr

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Write a sentence for the following equation: HCI (aq) + NaOH(aq) --&gt; NaCl<br> (aq) + H2O(l)
DedPeter [7]

Explanation:

it shows the Neutralization process, Acid (HCl) reacts with base(NaOH) to give salt(NaCl) and water (H2O)

5 0
3 years ago
Are ionic compounds stronger than covalent compounds?
uysha [10]

Answer:

Ionic bonds result from the mutual attraction between oppositely charged ions. They tend to be stronger than covalent bonds due to the coulombic attraction between ions of opposite charges.

Explanation:

8 0
3 years ago
When 10.9 g CaCO3 reacts with excess hydrochloric acid, as below, 3.79 g of CO2 is produced. What is the percent yield of CO2? D
erastovalidia [21]

Answer:

Yield of CO₂ = 79.1 %

Explanation:

This is the balanced reaction:

CaCO₃ (s) + 2HCl (aq) → CO₂ (g) + CaCl₂ (aq) + H₂O (l)

As the hydrochloric acid is in excess, the limiting reactant is the  CaCO₃.

Let's convert the mass to moles

10.9 g / 100.08 g/mol = 0.109 moles

Ratio is 1:1, so 0.109 moles of CaCO₃ will produce the same amount of CO₂.

Let's determine the mass

0.109 moles of CO₂ . 44 g/mol = 4.79 g

Now, we can determine the yield

(yeild produced / theoretical yield) . 100 =

(3.79 / 4.79) . 100 = 79.1%

7 0
3 years ago
Process for the extracting o acting oxygen and from iron oxide containing ores
Eduardwww [97]

Answer:

Smelting reduction employs two units: in the first, iron ore is heated and reduced by gases exiting from the second unit, which is a smelter-gasifier supplied with coal and oxygen. The partially reduced ore is then smelted in the second unit, and liquid iron is produced.

4 0
4 years ago
The partial pressure of oxygen in the alveoli is _______ mm Hg, while the partial pressure of carbon dioxide in the alveoli is _
valkas [14]

The partial pressure of oxygen in the alveoli is about 104 mm Hg, while the partial pressure of carbon dioxide in the alveoli is 40 mm Hg.

<h3>What is the partial pressure of gases in the alveoli?</h3>

The alveoli are tiny air sacs where gaseous exchange takes place between the lung and the bloodstream.

Because oxygen needs to diffuse into the bloodstream while carbon dioxide needs to diffuse out, the partial pressure of oxygen in the alveoli is around 104 mmHg while that of carbon dioxide is 40 mmHg.

With higher partial pressure than in the blood, oxygen from the alveoli will be able to diffuse into the blood. With lower partial pressure than in the blood, carbon dioxide will be able to diffuse from the blood into the alveoli.

More on the partial pressure of gases in the alveoli can be found here: brainly.com/question/14170500

#SPJ1

5 0
2 years ago
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