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4 years ago

What stores water, waste, and nutrients for the cell? A Plasma Membrane B Vacuole C Golgi Body D Nucleus

Chemistry

1 answer:

Dafna11 [192]4 years ago

4 0

I’m 95% sure it’s C the golgi body

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What is a formula unit in an iconic bond

Stolb23 [73]

Answer:

A formula unit indicates the lowest whole number ratio of ions in an ionic compound. Because the positively and negatively charged ions in an ionic compound are arranged in a crystal lattice, there is no discrete particle comparable to a molecule.

Explanation:

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3 years ago

Read 2 more answers

Select all of the following which are characteristics of metals.

shtirl [24]

Answer: Metals are malleable. Most metallic elements are solids at room temperature.

Explanation:

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3 years ago

A radioisotope decays to give an alpha particle andPb-208.

oee [108]

Answer: The original element is $_{84}^{212}\textrm{Po}$

Explanation:

Alpha decay is defined as the process in which alpha particle is emitted. In this process, a heavier nuclei decays into a lighter nuclei. The alpha particle released carries a charge of +2 units.

The released alpha particle is also known as helium nucleus.

$_Z^A\textrm{X}\rightarrow _{Z-2}^{A-4}\textrm{Y}+_2^4\alpha$

For the given alpha decay process of an isotope:

$^{Z}_{A}\textrm{X}\rightarrow ^{208}_{82}\textrm{Pb}+_2^4\alpha$

To calculate A:

Total mass on reactant side = total mass on product side

A = 208 + 4

A = 212

To calculate Z:

Total atomic number on reactant side = total atomic number on product side

Z = 82 + 2

Z = 84

The isotopic symbol of unknown element is $_{84}^{212}\textrm{Po}$

Hence, the original element is $_{84}^{212}\textrm{Po}$

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3 years ago

Which diagram represents a gas that has been ionized

Sloan [31]

Do you have a picture of a diagram?

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3 years ago

If a tank of gas contains 4 L of N O2 how many molecules are in it

Jobisdone [24]

but heres a way to solve it

An athlete takes a deep breath, inhaling 1.85 L of air at 21°C and 754 mm Hg.

How many moles of air are in the breath? How many molecules?

Gas constant, R= 8.314 J mol ¹ K-1

PV = nRT

= 0.08206 L atm mol-1 K-1

= 62.36 L Torr mol-1 K-1 -

1 atm = 760 mm Hg = 760 Torr

754 Forr 1.85€

6236 Jerr 294K

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2 years ago