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nekit [7.7K]
3 years ago
8

Gold is used for making ornaments give reason ​

Chemistry
2 answers:
Lena [83]3 years ago
8 0

Answer:

they are nice to look at....

Explanation:

Gold does not tarnish, rust or corrode. Due to its wonderful qualities and its luster, gold is considered the most important metal in jewellery making. As pure gold is too soft for everyday wear, it is alloyed with a mixture of metals in order to make the gold harder, so it can be used for jewellery.

brainliest pls....

Vedmedyk [2.9K]3 years ago
5 0

Answer:

Because looks good for a Christmas tree.

Explanation:

Gold ornaments look pretty shiny and cool to look at.

Hope I helped!

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With 11 electrons how many electron shells does sodium have?
Marysya12 [62]

Answer:

3 Shells

Explanation:

2 electrons in shell one, 8 in shell two and only 1 in shell three.

4 0
3 years ago
A student dissolved 3.50g of copper (II) nitrate in water and mixed it with a solution of sodium carbonate. The student recovere
Arisa [49]

Answer: If the theoretical yield is 2.35g then the percent yield is 80.4%

Explanation:

Given: Actual yield = 1.89 g

Theoretical yield = 2.35 g

Formula used to calculate the percentage yield is as follows.

Percent yield = \frac{actual yield}{theoretical yield} \times 100

Substitute the values into above formula as follows.

Percent yield = \frac{actual yield}{theoretical yield} \times 100\\= \frac{1.89}{2.35} \times 100\\= 80.4 percent

Thus, we can conclude that if the theoretical yield is 2.35g then the percent yield is 80.4%

3 0
3 years ago
Alpha helices are a type of secondary structure in proteins. What is the length of a 33.0 kDa single‑stranded α‑helical protein
WARRIOR [948]

Answer:

450 Å

Explanation:

The amino acids in an α-helix are arranged in a right-handed helical structure where each amino acid residue corresponds to a 100° turn in the helix, and a translation of 1.5 Å (0.15 nm) along the helical axis

Mass of protein= 33.0 kDa

33.0 kDa ×(1000Da/kDa) × ( 1 residue/ 110 Da)

=33.0 ×1000 × 0.0091

= 300 residues

300 residues × (1.5Å /residue)

=450 Å

7 0
3 years ago
5. What is another name for Newton’s first law in your own words.
krek1111 [17]
Newton’s first law states that motion stays the same throughout unless changed such as a football being placed on the ground and not moving it stays at rest and the football being thrown stays in motion unless changed by direction.
5 0
3 years ago
Determine whether the given compound name or formula contains a polyatomic ion. N H 4 C l Choose... Magnesium sulfate Choose...
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Answer:

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Explanation:

Determine whether the given compound name or formula contains a polyatomic ion.

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4 0
3 years ago
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