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ankoles [38]
2 years ago
15

Can someone help me with this 3 questions I’ll mark brainliest spam answers will be reported

Chemistry
2 answers:
Tju [1.3M]2 years ago
4 0

Answer:

1. stomach

2. veins

3.both are functions

Explanation:

1. <u>The cardiovascular system consists of the </u><u>heart</u><u>, and a closed system of vessels called arteries, </u><u>veins</u>, and capillaries. (Stomach is not included)

2.The inferior vena cava is the largest vein in the body and <u>carries deoxygenated blood from the lower half of the body into the heart</u>

<u>3. </u><u>Blood transports oxygen and nutrients to the lungs and tissues, and  brings waste</u><u> products to the kidneys and liver, which filter and clean the blood.</u>

<u />

<u>Hope this helps!</u>

anygoal [31]2 years ago
3 0
1. A
2. A
3. C
Your welcome
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What is the net ionic equation for the reaction if any that occurs when aqueous solutions of Na2CO3 and HCL are mixed?
strojnjashka [21]

Answer:

CO₃²⁻(aq)  +  2H⁺(aq) → CO₂ (g)  + H₂O (l)

Explanation:

The balanced reaction between Na2CO3 and HCl is given as;

Na₂CO₃ (aq) + 2 HCl (aq) → 2 NaCl (aq) + CO₂ (g) + H₂O (l)

The next step is o express the species as ions.

The complete ionic equation for the above  reaction would be;

2Na⁺(aq)  + CO₃²⁻(aq)  +  2H⁺(aq)  + 2Cl⁻(aq)   → Na⁺(aq)  + Cl⁻(aq)  + CO₂ (g)  + H₂O (l)

The next step is to cancel out the spectator ion ions; that is the ions that appear in both the reactant and product side unchanged.

The spectator ions are;  Na⁺ and Cl⁻

The net ionic equation is given as;

CO₃²⁻(aq)  +  2H⁺(aq) → CO₂ (g)  + H₂O (l)

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a compound with the empirical formula CH2 has a molar mass of 112 g/mol. What is the molecular formula for this compound?
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Hope it cleared your doubt :-D

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Question 3 (1 point)
antoniya [11.8K]

An electrochemical process involves any process that has to do with the transfer of elecrons.

<h3>What is an elecrochemical process?</h3>

An electrochemical process involves any process that has to do with the transfer of elecrons. These process include redo reactionand electron transport chains.

It is a true statement that the actiivity series helps to detect the products in a reaction because a metal that is lower in the series is always displaced by a metal that is higher in the series.

Learn more about electrochemical processess: brainly.com/question/12034258

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