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2 years ago

(I NEED THIS ANSWERED QUICKLY! I WILL GIVE BRAINLIEST IF YOU'RE ANSWER IS CORRECT! AND MAYBE EXTRA POINTS!)

Chemistry

2 answers:

Gnom [1K]2 years ago

8 0

Answer:

C. object does not slide off the pan

Explanation:

Triple beam balance is the name given to an instrument that is capable of measuring the mass of objects and measuring substances. This instrument is composed of three bundles, as the name says, the front bundle, the middle bundle and the long bundle. These three beams together indicate the difference in people and measurements of the objects in individual analyzes. When the balance of the triple beam is level you will notice that the measured object will not slide out of the pan

MrRissso [65]2 years ago

6 0

Answer:

C: object does not slide off the pan

Explanation:

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3 years ago

Read 2 more answers

Urea (CH4N2O) is a common fertilizer that can be synthesized by the reaction of ammonia (NH3) with carbon dioxide as follows: 2N

Montano1993 [528]

The question is incomplete, here is the complete question:

Urea (CH₄N₂O) is a common fertilizer that can be synthesized by the reaction of ammonia (NH₃) with carbon dioxide as follows: 2NH₃(aq) + CO₂(aq) → CH₄N₂O(aq) + H₂O(l) In an industrial synthesis of urea, a chemist combines 135.9 kg of ammonia with 211.4 kg of carbon dioxide and obtains 178.0 kg of urea.

Determine the limiting reactant. (express your answer as a chemical formula)

Answer: The limiting reactant is ammonia $(NH_3)$

Explanation:

To calculate the number of moles, we use the equation:

$\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}$ .....(1)

For ammonia:

Given mass of ammonia = 135.9 kg = 135900 g (Conversion factor: 1 kg = 1000 g)

Molar mass of ammonia = 17 g/mol

Putting values in equation 1, we get:

$\text{Moles of ammonia}=\frac{135900g}{17g/mol}=7994.12mol$

For carbon dioxide gas:

Given mass of carbon dioxide gas = 211.4 kg = 211400 g

Molar mass of carbon dioxide gas = 44 g/mol

Putting values in equation 1, we get:

$\text{Moles of carbon dioxide gas}=\frac{211400g}{44g/mol}=4804.54mol$

The given chemical reaction follows:

$2NH_3(aq.)+CO_2(aq,)\rightarrow CH_4N_2O(aq.)+H_2O(l)$

By Stoichiometry of the reaction:

2 moles of ammonia reacts with 1 mole of carbon dioxide

So, 7994.12 moles of ammonia will react with = $\frac{1}{2}\times 7994.12=3997.06mol$ of carbon dioxide

As, given amount of carbon dioxide is more than the required amount. So, it is considered as an excess reagent.

Thus, ammonia is considered as a limiting reagent because it limits the formation of product.

Hence, the limiting reactant is ammonia $(NH_3)$

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3 years ago

Water acts as a solvent. a. True b. False

Talja [164]

True. Water acts as a solvent as the solute dissolves into water.

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3 years ago

What are the products of the complete combustion of a hydrocarbon in excess oxygen

dangina [55]

The products for the complete combustion of a hydrocarbon in excess air is carbon dioxide and water. Any hydrocarbon when reacted with oxygen will always yield the said products. Incomplete combustion, on the other hand, yields carbon monoxide and water.

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3 years ago

Is carbon dioxide a compound, element,or a mixture? wat about air wat is it

sveta [45]

Carbon dioxide is a compound. Oxygen is an element. A compound is 2 or more elements chemically combined. An element is a pure substance. A mixture is combining two or more different compounds/elements.

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3 years ago