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iragen [17]
4 years ago
6

What is magnesium oxide (A) a molecular compound with properties different from magnesium or oxygen (B) a molecular compound wit

h the same properties as magnesium or oxygen (C) a shiny metal similar to magnesium but with a higher melting point (D) a iconic compound with properties different from magnesium or oxygen
Chemistry
1 answer:
Kruka [31]4 years ago
5 0
Try out answer C magnesium oxides melting point is almost 5 times higher than magnesium
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7. A species is _ when its population has become so low that it is close to becoming extinct
Anna35 [415]

Answer:

Endangered. The meaning of endangered is when a species declines in number- this might be because they are being eaten by another animal which has a higher popupayion, or perhaps because they are being hunted by humans for their meat or fur. Neither reason might be that their food or habitat has been destroyed b humans to create land for farming or housing. one example of name endangered species is Polar Bears: they like in the Antarctic where there is no land, simply ice. Due to humans causing climate change, the world is warming up and the ice is melting. This means polar bears are dying out because it would be too tiring to swim to find ice. For the same reason, other animals are dying in the Antarctic meaning that Poplar Bears have less to eat (being at the top of the food chain -no animal eats polar bears).

7 0
3 years ago
The pH of a 0.25 M aqueous solution of hydrofluoric acid, HF, at 25.0 °C is 2.03. What is the value of Ka for HF?
Mazyrski [523]
Last option that is none of above is right answer.
8 0
4 years ago
Read 2 more answers
. Round to the nearest whole number
laila [671]

Answer:

21091mg of aspirin the person need to consume

Explanation:

To solve this question we must find the mass of the person in kg. Knowing the lethal dose for aspirin is 400mg/kg of person, we can find the amount of aspirin that the person need to consume to get a lethal dose:

<em>Mass person:</em>

116lb * (1kg / 2.2lb) = 52.7kg

<em>Lethal dose:</em>

52.7kg * (400mg / kg) =

<h3>21091mg of aspirin the person need to consume</h3>
3 0
3 years ago
Why water can't be burn​
mojhsa [17]

Answer:because it isnt flammable

Explanation:water can not be burned

3 0
3 years ago
AdiffusioncoupleofweldedAandBwasgivenadiffusionannealatelevatedtemperatureandthencooledtoroomtemperature.Chemicalanalysisofthesu
Murljashka [212]

Answer:

what

Explanation:

8 0
3 years ago
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