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Nonamiya [84]
3 years ago
9

- Which theory was the natural beginning of a Big Bang theory?

Chemistry
1 answer:
cestrela7 [59]3 years ago
8 0

Well, the big bang theory was that the universe started to expand at and extrmly fast rate. We're talking several billion kilometers in less than a second.  People think that our univers was pretty much shot out into space in a ciertain direction. During this, the univers has expanded and widen't to unimaginable size. but we really don't know what happend, and we may never find out. Who knows?

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Suppose you are working in a chemistry lab and trying to make a solution of a substance called Sodium Chloride (which is a solid
Alenkasestr [34]

Answer:

a weighing balance, a measuring cylinder, a spatula, a beaker/flask, and a stirrer

Explanation:

The lab apparatus that would be needed to prepare a solution of sodium chloride would be <em>a weighing balance, a measuring cylinder, a spatula, a beaker/flask, and a stirrer.</em>

The weighing balance would be used to weigh out the required amount of sodium chloride. The beaker or flask would be placed on the weighing balance and its weight zeroed. The spatula would then be sued to take out the sodium chloride from its container into the beaker till the required amount is reached. The measuring cylinder would then be used to measure out the required volume of water which would be added to the salt in the beaker. The stirrer would then be used to stir the mixture in order for the salt to dissolve.

7 0
3 years ago
A hypothetical element has three main isotopes with mass numbers of 51, 53, and 54. If 15.00% of the isotopes have a mass number
Eva8 [605]

Answer: 53.25

Explanation: Please see attachment for explanation. Thanks.!

5 0
3 years ago
How many moles of water contain 1.3 x 10^24 molecules?
Vika [28.1K]
C is the correct answer
3 0
4 years ago
HELP PLS !!!! :))Formula unit of Sr and CI<br><br> Formula unit of AI and S
xenn [34]

Answer : The formula unit of Sr & Cl is SrCl_2 and the formula unit of Al & S is Al_2S_3

Explanation :

Formula unit : it is defined as the lowest number ratio of ions of an elements in an ionic compound or covalent compound.

For the formula unit of Sr & Cl, two chloride ions(Cl^-) are needed to neutralize the one strontium ion(Sr^{2+}).

For the formula unit of Al & S, three sulfide ions(S^{2-}) are needed to neutralize the two aluminium ion(Al^{3+}).

The formula unit of SrCl_2 and Al_2S_3 are shown below.

4 0
3 years ago
Look at the picture below. Name the isotope.
Aleks [24]

Answer:

carbon-13

Explanation:

6 0
3 years ago
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