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statuscvo [17]
4 years ago
5

Which of the following is a base?

Chemistry
1 answer:
Zinaida [17]4 years ago
3 0
D. Ca (oh)2 (calcium hydroxide)
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2. In contrast to Venus, the coldest temperature yet measured on the surface of
Leviafan [203]

38K

-391°F

Explanation:

Given temperature:

Temperature of Triton = -235°C

Unknown:

Surface temperature of Triton in °F and Kelvin

Solution:

Temperature is the degree of hotness or coldness of a body.

It is usually measured using units of kelvin, degree Celsius and degree Fahrenheit.

tK = 273 + t°C    from °C  to K

t°F = \frac{9}{5} t°C  + 32

 

tk = temperature in kelvin

 t°C = temperature in Celsius

t°F = temperature in Fahrenheit

tK = 273 + (-235) = 38K

t°F = \frac{9}{5} x (-235)   + 32  = -423 + 32 = -391°F

learn more:

Heat and temperature brainly.com/question/914750

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7 0
4 years ago
Four chemical compounds labeled from A to D. Compound A is CH3NH2. Compound B is CH3SH. Compound C is CH3CH2CHO with an O atom d
Alex Ar [27]

Answer:

Compound D is CH3OPO3 is the best answer

Explanation:

4 0
4 years ago
Who uses chemicals?
Schach [20]
A. Everyone. Ppl use chemicals everyday and don’t even know it. And that’s why its everyone periodt
7 0
4 years ago
The equation X + Y 2Z has the rate law equation shown below. Which of the following statements best describes the relationship o
andreyandreev [35.5K]
The order of the reaction with respect to X is 2.
The statements given ;
1. As Concentration of X is in the rate law equation , changing X will have an effect on the rate of the equation.
2. Rate is proportional to X^2
So if concentration of X is doubled, then rate proportional to (2X)^2 = 4X^2
Rate therefore quadruples when X is doubled
This statement is correct
3. If we divide X/2 then the effect to the rate is (X/2)^2 = X/4 . This will reduce the rate by quarter not half . This statement is wrong.
4. If we multiply by 3
Then rate proportional to (3X)^2 = 9X^2
Rate increases by 9 times. This statement is wrong
4 0
3 years ago
How many lone pairs of electrons are represented in the Lewis structure of a phosphate ion (PO43-)?
skad [1K]
Hey

P has 5 valence electrons
O has 6 valence electrons (each for 4 oxygen)
And finally, for every negative charge, there is an additional valence electron

We should add these all up = 5 + 24 + 3 = 32 valence electrons

With this, we can be guided to illustrate the lewis structure as P as central atom and the 3 oxygen each with a single bond with P and 1 oxygen with a double bond with P. We place the valence electrons until octet rule is satisfied,
we will be left with 12 lone pairs for phosphate ion.

Hoped I Helped
6 0
4 years ago
Read 2 more answers
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