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Sunny_sXe [5.5K]
3 years ago
10

Can someone please help me

Chemistry
2 answers:
Hunter-Best [27]3 years ago
5 0

Answer:

kilogram

Explanation:

because kilogram is equal to thousand grams

Ad libitum [116K]3 years ago
4 0

Answer:

1.) kilogram

2.) milimeter

3.) bigger

4.) 90,000 g, 90,000,000 mg

Explanation:

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If 500g of copper melts at 1085°C, at what temperature would 250g of<br> copper melt?
Alex787 [66]

Answer:

the copper would melt at the same temperature no matter how much quantity there is so 1085

Explanation:

6 0
3 years ago
A sample of 8.5 g NH 3 on oxidation produces 4.5 g of NO. Calculate the percent yield.
yanalaym [24]

Answer:

nvnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnv

Explanation:

3 0
3 years ago
At 524 mm Hg and 35 °C, a sample of gas occupies a volume of 275 ml. The gas is transferred to a 325-ml flask and the temperatur
Deffense [45]

Answer:

400.197mmHg

Explanation:

P1V1 / T1 = P2V2 / T2

Where P1=524 mm Hg V1 =275 ml T1 = 35°C +273 = 308k

V2= 325-ml T2= 5°C+273 = 278k , P2= ?

Substituting the values into the formula.

524 mm Hg ×275 ml /308k = P2×325-ml/278k

Cross multiply

524 mm Hg ×275 ml×278k=308k×P2×325-ml

40059800= 100100×P2

P2 = 40059800/100100

P2= 400.197mmHg

Hence, the second pressure will be 400.197mmHg

6 0
3 years ago
Hydrogen (H), oxygen (O), and Nitrogen (N) are all examples of which of the following?
Llana [10]

Answer:

All are correct

Explanation:

This might be a little deceptive.  The question shows H, O and N which would designate ELEMENTS.

However, all of these can also be considered compounds and molecules as well.  BUT, they are H₂, O₂ and N₂ when they are molecules and compounds.

So it depends on the whether the question is being literal or not.

8 0
3 years ago
Describe a plan for finding what kind of a change each hammered bananas undergoes. Physical or chemical?
vesna_86 [32]
The hammered bananas will undergo a physical change when hammered, and both a physical and chemical change when put into liquid nitrogen. The will freeze and harden, causing them to be solidified once again, yet their temperature will lower exponentially, causing them to freeze. Physical change is when it hardens and the temperature drops. chemical when it freezes.
3 0
3 years ago
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