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wolverine [178]
3 years ago
12

Is this correct? plssssssssss help me

Chemistry
2 answers:
MAXImum [283]3 years ago
5 0

You are correct.

Grass grows rapidly, and sometimes you can't even tell. That's what he means

Keep being brainy! :)

Irina-Kira [14]3 years ago
3 0
This is not correct.
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Complete and balance the molecular equation, including phases, for the reaction of aqueous sodium sulfate, Na2SO4, and aqueous b
expeople1 [14]
The complete chemical reaction of aqueous Sodium sulfate and aqueous Barium nitrate is

Na_{2}  SO_{4} (aq) + Ba(NO_3)_2(aq) -\ \textgreater \  BaSO_4(s) + 2NaNO_3(aq)

The right side and the left side of the reaction have equal number of elements, therefore it is balanced.

5 0
3 years ago
Read 2 more answers
How can one establish whether a liquid sample extracted from a plant is pure<br>​
Assoli18 [71]
The most accurate means of determining the purity of a substance is through the use of analytical methods. These methods, widely used in different industries, mostly involve chemical analysis, which can pinpoint the presence, identity and amount of impurities in the sample. The most simple chemical methods include gravimetry and titration. There are also the more advanced light-based or spectroscopic methods, such as UV-VIS spectroscopy, nuclear magnetic resonance and infrared spectroscopy. Chromatographic methods, such as gas chromatography and liquid chromatography, can also be used. Other methods used in testing the purity include mass spectroscopy, capillary electrophoresis, optical rotation and particle size analysis.

-basically nerdy talk for using machines controlling chemicals or other atoms to pinpoint any impurities
6 0
2 years ago
Match the vocabulary word with its definition. Match the items in the left column to the items in the right column. 1. The actua
tekilochka [14]

Answer:

1. The actual amount of product that is produced from a given amount of reactant or reactants.  → actual yield  

2. A law which states that in ordinary chemical reactions, the sum of the masses of the reactants always equals the sum of the masses of the products.    → Conservation of Mass

3. The reactant that is not used up in a reaction that goes to completion

→ excess reactant  

4. The reactant that limits how much product is produced in a reaction that goes to completion. It is used up in the reaction. → limiting reactant  

5. The ratio of the actual yield to theoretical yield multiplied times 100.

→ percent yield

6. The maximum calculated amount of product produced from a given reactant in a reaction that goes to completion. → theoretical yield

7. The study of the quantitative relationships between reactants and products in a chemical reaction. → stoichiometry  

Explanation:

1. The actual amount of product that is produced from a given amount of reactant or reactants.  → actual yield  

  • The actual yield is the actual amount of product that is produced in a chemical reaction and it can be determined experimentally.

2. A law which states that in ordinary chemical reactions, the sum of the masses of the reactants always equals the sum of the masses of the products.    → Conservation of Mass

  • The law of conservation of mass states that mass in an isolated closed system is neither created nor destroyed by chemical reactions or physical transformations. According to the law of conservation of mass, the mass of the products in a chemical reaction must equal the mass of the reactants.

3. The reactant that is not used up in a reaction that goes to completion

→ excess reactant  

  • In any chemical reaction between two or more reactants, the excess reactant is the substance that is leftover when the chemical reaction is ended. The amount of product formed is not limited by this reagent.

4. The reactant that limits how much product is produced in a reaction that goes to completion. It is used up in the reaction. → limiting reactant  

  • In any chemical reaction between two or more reactants, the limiting reactant is the substance that is consumed completely when the chemical reaction is ended. The amount of product formed is limited by this reagent, since the reaction cannot continue without it.

5. The ratio of the actual yield to theoretical yield multiplied times 100.

→ percent yield

  • percent yield  = (actual yield / theoretical yield) *100

6. The maximum calculated amount of product produced from a given

reactant in a reaction that goes to completion.

→ theoretical yield

  • theoretical yield  is defined as the amount of the obtained desired product.

7. The study of the quantitative relationships between reactants and products in a chemical reaction.

→ Stoichiometry

  • Stoichiometry is a branch of chemistry that deals with relationships between reactants and/or products in a reaction to determine desired quantitative data.

3 0
3 years ago
A solution in which 50 grams of solute is dissolved in 250 grams of solution has a concentration of blank percent.
Stella [2.4K]

Answer:

20%

Explanation:

w=(solute)/(solution)

w = 50g/250g = 0.2

6 0
4 years ago
What is chemistry the study of?
IRINA_888 [86]
Chemistry is the study of substances—that is, elements and compounds.
8 0
3 years ago
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