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Alecsey [184]
3 years ago
8

What are the words for each blank spot?

Chemistry
2 answers:
alexandr1967 [171]3 years ago
5 0
What the person said is the correct answer so thank them!
miskamm [114]3 years ago
3 0

Answer:

1. Scientific Method, 2. Experiment, 3. Independent variable, 4. Controlled variable, 5. Dependent variable.

Explanation:

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The degree to which a measurement approaches a standard value is _____. accuracy
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You forgot one...and that happens to be the answer---> Accuracy
7 0
3 years ago
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Use the successive ionization energies for this unknown element to identify the family it belongs to.
NNADVOKAT [17]

Answer: Belongs to the group 2A

Explanation:

As you can see, the first two ionization energies are close and low, meaning that this element ionizates easily.

Not only loses easily the first electron, but the second too

To remove the third electron you requiered a huge amount of energy

Now, elements easily ionizable are the ones from group IA, group 2A and transition metals.

The last ones have mixed characteristics in matter of how many electrons you can remove from them, so they are not a family.

Now the question: group I or group II ?

The elements of group I have low  ionization energies  for the first electron but high energies for the second ones.

Being all that said, the unknown element belongs to the Group 2A

4 0
2 years ago
Cow’s milk is 4.5% by mass of lactose. Calculate the mass of lactose present in 175 g of<br> milk
Reptile [31]

Answer:

7.875 grams

Explanation:

You multiply 175 g by .045

This gives you 7.875 grams of lactose

6 0
3 years ago
1 Aluminum reacts with oxygen to produce aluminum oxide, what is the chemical equation?​
Roman55 [17]

Answer:  Aluminum reacts with oxygen to produce aluminum oxide as follows: 4Al + 3O2 → 2Al2O3 a.

Explanation: I really really <u>hope</u> that was <u>helpful.</u>

4 0
2 years ago
What will you observe when you open a bottle of concentrated hydrochloric acid?
Soloha48 [4]

Answer:

Strong affinity of HCl gas for moisture in air results in forming of droplets of liquid solution which appears like a cloudy smoke.

Explanation:

#followformore

Hope this helps :)

7 0
3 years ago
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