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yarga [219]
3 years ago
7

Will Upvote!

Chemistry
2 answers:
Greeley [361]3 years ago
4 0
I would think energy has been transferred <span />
Degger [83]3 years ago
3 0

Answer:

B. Energy was transferred

Explanation:

All chemical and biochemical reactions release or absorb energy from the environment in some way. Every process of heat transfer between bodies, substances and the enviroment is also considered a process of energy transfer.

The processes that release heat are called exothermic and give us a feeling of warmth. This is the case, for example, with combustion.

On the other hand, the sensation of cold we feel when leaving a bath, or when we take an ice cube, is associated with endothermic processes. Such processes, like evaporation and fusion of water, for example, absorb heat from the environment and this can also be perceived by our body.

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Which two elements have similar physical and chemical properties?
guapka [62]

Explanation:

Elements in the same group have same number of valence electrons. And we know, the elements which have same number of valence electrons, have similar physical and chemical properties. Hence, the elements in the same group have similar physical and chemical properties.

5 0
3 years ago
The nucleus of the atom contains what subatomic particle(s)? Protons only Neutrons only Electrons only Protons and neutrons Prot
lakkis [162]
Hello,

The answer is option C protons and neutrons.

Reason:

The middle of the nucleus contains the protons and the neutrons which contain the positive and electrical charges which decides the element which means option C will be your answer.

If you need anymore help feel free to ask me!

Hope this helps!

~Nonportrit 
4 0
3 years ago
Read 2 more answers
If the atomic number of an element is 16, then it has 16 electrons.<br> True<br> False
Aleks04 [339]
True hope this helped u out cuh
4 0
3 years ago
A sample of hydrogen occupies a volume of 351 mL at a temperature of 20 degrees Celsius. What is the new volume if the temperatu
xeze [42]
Volume of Hydrogen V1 = 351mL 
Temperature T1 = 20 = 20 + 273 = 293 K 
Temperature T2 = 38 = 38 + 273 = 311 K 
We have V1 x T2 = V2 x T1 
So V2 = (V1 x T2) / T1 = (351 x 311) / 293 = 372.56 
Volume at 38 C = 373 ml
6 0
3 years ago
Why are yeast cells used in making bread?
tatiyna

Answer:

Yeast is used for the leavening of bread. Yeast uses the sugars and oxygen in dough to produce more yeast cells and carbon dioxide gas. The carbon dioxide makes the dough rise which gives the bread a light and spongy texture. Yeast also works on the gluten network.

Explanation:

5 0
2 years ago
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