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Triss [41]
2 years ago
13

If it is 9 am in San Francisco, is it also 9 am in New York? Why or why not?

Chemistry
2 answers:
lys-0071 [83]2 years ago
5 0

Answer:

san franciso is 3 hours beind and with NewYork

Explanation:

kifflom [539]2 years ago
5 0

Answer:

It wouldn't be 9am in New York because San Francisco is 3 hours behind of New York

Explanation:

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What determines the transition between different states of matter?
Scrat [10]

Answer:

Phase transition is when a substance changes from a solid, liquid, or gas state to a different state. Every element and substance can transition from one phase to another at a specific combination of temperature and pressure.

Explanation:

4 0
2 years ago
An isotope has three forms. 30% have a mass of 15 amu, 20% have a mass of 16 amu and 50% have a mass of 17 amu. What is the aver
murzikaleks [220]

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Explanation:

a

3 0
3 years ago
What is another name for a chemical change? A. chemical spill B. physical change C. physical property D. chemical reaction
Elenna [48]

The correct answer is D. chemical reaction.

5 0
3 years ago
A mineral consisted of 29.4% calcium, 23.5% sulfur and 47.1% oxygen. What is the empirical formula?
inessss [21]
Step  one  calculate  the  moles  of  each  element
that  is  moles= %  composition/molar  mass
molar  mass  of    Ca  =  40g/mol,     S=  32  g/mol ,   O=  16 g/mol

moles  of      Ca = 29.4 /40g/mol=0.735 moles,      S= 23.5/32  =0.734 moles,  O= 47.1/16= 2.94   moles

calculate  the mole  ratio  by  dividing   each  mole with  smallest  mole   that   is  0.734
Ca=  0.735/0.734= 1,      S=  0.734/0.734 =1,   O  = 2.94/  0.734= 4
therefore  the  emipical  formula  =  CaSO4
5 0
3 years ago
If an equal number of moles of the weak acid HF and the strong base KOH are added to water, is the resulting solution acidic, ba
s344n2d4d5 [400]

Answer:

Being a weak acid and a strong base, where it is diluted in a neutral medium such as water, the basic medium predominates, almost alkaline pH.

Explanation:

The acidity of the solution, being weak, means that its pH is not so low, therefore it will be easier to reach the values of 7 or 7 where alkalinity or basity is indicated.

6 0
3 years ago
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