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2 years ago

What is the difference between the small and large intestines?

Chemistry

1 answer:

nalin [4]2 years ago

3 0

Ggggggggggggggggggggggggggggggggggggggg

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Explain how electron microscopes work and why some scientists might prefer to use electron microscopes instead of light microsco

WINSTONCH [101]

Answer:

Electron microscopes differ from light microscopes in that they produce an image of a specimen by using a beam of electrons rather than a beam of light. Electrons have much a shorter wavelength than visible light, and this allows electron microscopes to produce higher-resolution images than standard light microscopes.

Explanation:

8 0

2 years ago

What is the net ionic equation of the reaction of MgSO4 with Pb(NO3)2? Express you answer as a chemical equation including phase

Nady [450]

Answer : The net ionic equation will be,

$Pb^{2+}(aq)+SO_4^{2-}(aq)\rightarrow PbSO_4(s)$

Explanation :

In the net ionic equations, we are not include the spectator ions in the equations.

Spectator ions : The same number of ions present on reactant and product side which do not participate in a reactions.

The given balanced ionic equation will be,

$MgSO_4(aq)+Pb(NO_3)_2(aq)\rightarrow Mg(NO_3)_2(aq)+PbSO_4(s)$

The ionic equation in separated aqueous solution will be,

$Mg^{2+}(aq)+SO_4^{2-}(aq)+Pb^{2+}(aq)+2NO^{3-}(aq)\rightarrow PbSO_4(s)+Mg^{2+}(aq)+2NO^{3-}(aq)$

In this equation, $Mg^{2+}\text{ and }NO_3^-$ are the spectator ions.

By removing the spectator ions from the balanced ionic equation, we get the net ionic equation.

The net ionic equation will be,

$Pb^{2+}(aq)+SO_4^{2-}(aq)\rightarrow PbSO_4(s)$

4 0

2 years ago

30 POINTS MATCH THE DEFINITIONS PLEASE, ITS PROBABLY EASY FOR U THO

TiliK225 [7]

Answer:

(going down the line)

1. matter

2. hypothesis

3. energy

4. independent variable

5. theory

6. quantitative data

7. dependent variable

8. constant

9. law

10. qualitative data

Explanation:

5 0

2 years ago

The ideal gas law equation is: PV = nRT

nignag [31]

Answer:

The answer is the first option 0.37 moles

Explanation:

the ideal gas law is PV = nRT, so in the terms of n,

n = PV/RT (divide both sides by RT to let n stand alone)

given: P = 700 kpa, V = 2L, T = 450 K , R = 8.31

n = (700 * 2) / (8.31 * 450)

= 1400/3739.5

= 0.34

8 0

2 years ago

What is the atomic number of an atom that has fie neutrons and four electrons

Natali [406]

Answer:

Explanation:

3 0

3 years ago

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