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Kay [80]
2 years ago
12

Which best represents a homogeneous mixture of an element and a compound.

Chemistry
1 answer:
Allushta [10]2 years ago
3 0

Answer:

The composition of air this is because it vmade up of oxygen, nitrogen, Nobel gages and Carbon dioxide

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The molecular formula of a compound is C7H14O7. what is the empirical formula​
nata0808 [166]
Empirical formula is the simplest way the molecular formula can be wrote so here 7 goes into all of these so it would be CH2O
6 0
2 years ago
write the chemical formula for the following compound -magnesium chloride, zinc sulphide Sodium,sodium sulphate, calcium bicarbo
Sindrei [870]

Answer:

magnesium chloride: MgCl2

zinc sulphide: ZnS

sodium sulphate: Na2SO4

calcium bicarbonate: Ca(HCO3)2

6 0
3 years ago
Equal amounts of four gases are placed in identical containers at the temperatures that are noted below. Samples of Gases at Dif
Alborosie
Answer : S)  33.2 °C

Explanation : When the equal amounts of gases are placed in identical containers but subjected to different temperatures would exert pressure in different amount which will in turn increase the rate of collision between the molecules of gas.

So, when the temperature is increased to maximum greater amount of force would be exerted and the gas molecules will collide with a larger force. Hence the answer will be as the highest temperature i.e. 33.2 °C
4 0
3 years ago
What is speed? If you walk 3 kilometers in 30 minutes, what is your average speed in kilometers per hour? Compare and contrast i
Mrrafil [7]

Answer:

See explanation

Explanation:

distance = 3 kilometres

time = 30 minutes or 0.5 hours

speed = distance/time = 3/0.5 = 6 Kmhr-1

Average speed is given by total distance covered divided by the total time taken while the instantaneous speed is the speed of an object at a particular instant or moment in time. Average speed refers to the whole journey while instantaneous speed refers to a particular point or instant in the journey.

distance= x

time = 3 hours

speed = 50 miles per hour

speed = distance/time

distance = speed * time

distance = 3 * 50

distance = 150 miles

3 0
2 years ago
7. What is the missing part of this fusion equation?
Viefleur [7K]

Answer:

2 1 H

Explanation:

We must remember that a nuclear equation is only said to be balanced when the mass and charges on both sides of the nuclear reaction equation correspond.

If we look at the nuclear equation; the total mass on the right hand side is 4 units while the total charge on the right hand side is two units.

This implies that the missing particle must be 2 1 H

3 0
3 years ago
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