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3 years ago

The weight of an object never changes. True False

Chemistry

2 answers:

goblinko [34]3 years ago

8 0

Answer: False depending on what you do or what happens to the object but true if nothing happens to it

Explanation:

sertanlavr [38]3 years ago

6 0

the answer to your question is

true

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Atoms with a low electronegativity,like lithium,have a weak attractive force for electrons because

Murrr4er [49]

Answer:

they're close to filling their outer shell, fulfilling the octet rule

Explanation:

3 0

3 years ago

A liter of milk has a [H] of about 2.51 x 10-7. (You may prefer to think of the hydronium ion concentration, [H3O+], as 2.51 x 1

riadik2000 [5.3K]

Answer:

12-6

Explanation:

7 0

2 years ago

Write the net ionic equation for the precipitation reaction that occurs when aqueous solutions of chromium(III) bromide and pota

expeople1 [14]

Explanation:

An ionic equation will be the one in which all the participating species will be present as ions.

The given reaction will be as follows.

$CrBr_{3} + K_{2}CO_{3} \rightarrow Cr_{2}(CO_{3})_{3}(s) + KBr$

Balancing this equation by multiplying $CrBr_{3}$ by 2 and $K_{2}CO_{3}$ by 3 on reactant side. Whereas multiply KBr by 6 on product side.

$2CrBr_{3} + 3K_{2}CO_{3} \rightarrow Cr_{2}(CO_{3})_{3}(s) + 6KBr$

Hence, the net ionic equation will be as follows.

$2Cr^{3+}(aq) + 3CO^{2-}_{3}(aq) + 6K^{+} + 6Br^{-} \rightarrow Cr_{2}(CO_{3})_{3}(s) + 6K^{+} + 6Br^{-}$

As both $K^{+}$ and $Br^{-}$ are spectator ions. Hence, the net ionic equation will be as follows.

$2Cr^{3+}(aq) + 3CO^{2-}_{3}(aq) \rightarrow Cr_{2}(CO_{3})_{3}(s)$

4 0

3 years ago

121) The sugar sucrose has 12 carbon atoms, 22 hydrogen atoms and 11 oxygen

mart [117]

Answer:

Explanation:

121) The sugar sucrose has 12 carbon atoms, 22 hydrogen atoms and 11 oxygen

atoms. How would this be written?

A) Co12H22O1 [Co is cobalt]

<u><em>B) CI2H22011</em></u> [Yes]

C) C6H1206 [6 C atoms]

D) CacH1206 [Ca is calcium]

122) How are the elements organized on the periodic table?

A) Atomic Mass [Yes, from lightest to heaviest]

B) Element Name

C) Symbol

D) No Set Organization

123) Which of the following elements would be considered a compound?

A) CH [Yes, two or more elements combined]

B) Si [No]

C)F [No]

D) O6 [No, multiple atoms, but same element]

124) The formula for water is H2O meaning there are 2 Hydrogen atoms and 1

Oxygen. What is the atomic mass of one molecule to the nearest hundredth?

A) 15.99

B) 16.99

C) 17.99 [Yes, 16 + 2*1 = 18]

D) 18.99

4 0

1 year ago

Name the planet: Until recently, this stormy, blue-colored planet had a great dark spot on it, which was a high pressure cyclone

Mnenie [13.5K]

It’s Neptune hehe :))

4 0

3 years ago

Read 2 more answers