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Feliz [49]
3 years ago
7

What is the density of an object of an object having a mass of 6.0 grams and a volume of 35 cm3?

Chemistry
1 answer:
Marizza181 [45]3 years ago
8 0

Answer:

0.17 ( 2 s.f.)

Explanation:

d=m/v

=6/35

=0.1714285

=0.17

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Is eubacteria a multicellular organism or a unicellular organism?
jasenka [17]
Eubacteria is a unicellular organism because they are made of one cell. Hope this helps! :)
8 0
3 years ago
nough of a monoprotic acid is dissolved in water to produce a 0.0199 M solution. The pH of the resulting solution is 2.64 . Calc
Debora [2.8K]

Answer:

Explanation

pH = 2.64

pH = - log [H+]

[H+] = 0.00229 M

HA = 0.0199 M

Dissociation equation

HA --> H+ + A-

Ka = [H+][A-]/[HA]

[H+] = [A-]

Ka = (0.00229^2)/0.0199

= 2.64 × 10^-4 M

5 0
4 years ago
In the reaction between NaNO3 (aq) and Li2SO4 (aq), will a precipitate form?
lara31 [8.8K]

<u>Answer:</u> The correct answer is No, this reaction produces no insoluble products.

<u>Explanation:</u>

Precipitate is defined as the insoluble salt which emerges when two different solutions are mixed together. It settles down at the bottom of the flask after some time.

The balanced chemical equation for the reaction of sodium nitrate and lithium sulfate follows:

2NaNO_3(aq.)+Li_2SO_4(aq.)\rightarrow Na_2SO_4(aq.)+2LiNO_3(aq.)

By Stoichiometry of the reaction:

2 moles of aqueous solution of sodium nitrate reacts with 1 mole of aqueous solution of lithium sulfate to produce 1 mole of aqueous solution of sodium sulfate and 2 moles of aqueous solution of lithium nitrate.

All the products are aqueous solution and thus, no precipitate is formed.

8 0
3 years ago
The atomic number is the number of protons in the atom of the element
ipn [44]

Answer:

True

Explanation:

If you look closley at the nucleus, you don't count the neutrons just the prtons which then effect the electrons.

Good luck :)

5 0
3 years ago
Name this compound Ca (OH)2
Ira Lisetskai [31]

I believe the answer is Calcium dihydroxide

7 0
3 years ago
Read 2 more answers
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