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3 years ago

Human blood has a pH between 7.38 and 7.42. What can one conclude about human blood?

Chemistry

1 answer:

uranmaximum [27]3 years ago

8 0

Answer:

give me brainliest please!

D. it is slightly basic there ya go homie

Explanation:

Explain how the cohesive and adhesive properties of water are useful in maintaining various life processes. One Life process that shows how the cohesive and adhesive properties of water is useful in maintaining life is how water droplets form on plant leaves. This is because of the water being cohesive, which means it sticks to itself to make a water drop. Then the adhesion of the water to other objects allows this water drop to stick to whatever leaf to be able to be absorbed by the plant. Also how the cohesive properties of water allows for water to be gathered, therefore without this cohesive property the water would not allow it to fill up a water bottle or flow through pipes, or be in human bodies, I.e blood. therefore blood is slightly basic

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Give two examples of how our society uses isotopes

nalin [4]

Answer:

Isotopes – caused by varying numbers of neutrons in an element – have many practical uses in our society. ... In geology and archaeology, radioactive isotopes are used to determine the age of a sample while hydrologists can use isotope signatures to distinguish between different groundwater types.

Explanation:

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3 years ago

A flask is filled with 50.0 ml of 0.15 M HCl acid. Exactly 0.054 grams of CaCo3 are placed in the acid,

ira [324]

Answer:

See explanation

Explanation:

2HCl(aq) + CaCO3(aq) ------->CaCl2(aq) + CO2(g) + H2O(l)

Number of moles of acid present = 50/1000 * 0.15 = 0.0075 moles

Number of moles of calcium carbonate = 0.054g/100 g/mol = 0.00054 moles

2 moles of HCl reacts with 1 mole of calcium carbonate

x moles of HCl reacts with 0.00054 moles of calcium carbonate

x = 2 * 0.00054/1

x = 0.00108 moles of HCl

Amount of acid left = 0.0075 moles - 0.0075 moles = 0.00642 moles

Reaction of HCl and NaOH

HCl(aq) + NaOH(aq) ------> NaCl(aq) + H2O(l)

Since the reaction is in the mole ratio of 1:1

0.00642 moles of HCl is neutralized by 0.00642 moles of NaOH

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3 years ago

Which 4 planets belong together? which 4 planets lumped together have the most similarities

andrey2020 [161]

Answer:

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Explanation:

6 0

3 years ago

Read 2 more answers

Which of the following types of equations will include spectator ions

krek1111 [17]

Answer:- B) Full ionic equation

Explanations:- A molecular equation does not have ions. It is the non charge form of the elements of compounds. When we write the full or total ionic equation for the molecular equation then ions are written for the aqueous species. The ions present on both sides(reactant and product sides) in a full ionic equation are known as spectator ions or common ions. These ions are canceled to get the net ionic equation. For example, reaction of aqueous solution of silver nitrate with aqueous solution of barium chloride to form aqueous solution of barium nitrate and a precipitate of silver chloride.

Balanced molecular equation:-

$BaCl_2(aq)+2AgNO_3(aq)\rightarrow Ba(NO_3)_2(aq)+2AgCl(s)$

Full ionic equation:-

$Ba^+^2(aq)+2Cl^-(aq)+2Ag^+(aq)+2NO_3^-(aq)\rightarrow Ba^+^2(aq)+2NO_3^-(aq)+2AgCl(s)$

If we look at the above full ionic equation then barium ion and nitrate ions are the spectator ions are they are present on both sides.

So, while writing the net ionic equation, these spectator ions are canceled.

Net ionic equation:-

$2Cl^-(aq)+2Ag^+(aq)\rightarrow2AgCl(s)$

So, it is also clear from the above example that it's the full ionic equation that include spectator ions.

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3 years ago

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a ______ consumer is a heterotroph that directly eats an autotroph. A primary B. Quaterany C tertiary D secondary

Softa [21]

Primary consumer just remember the “primary” (first) consumer so the one that eats a heterotroph

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