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antiseptic1488 [7]
3 years ago
11

Element X is in group 2, and element Y is in group 7, of the periodic table. which ions will be present in the compound formed w

hen X and Y react together?
A) X^+ and Y^-
B)X^2+ and Y^-
C)X^+ and Y^2-
D)X^2- and Y^+
Chemistry
1 answer:
12345 [234]3 years ago
8 0

Answer:

Element X has valency 2 while Y Valency 2, element Y has high tendency of gaining electrons for its stability thus the compound formed will be B

elements X is positively charged while Y will be negatively charged

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A shopping cart is a compound machine that makes doing work easier. Compound
Taya2010 [7]

Answer:

Explanation:I would say an incline because if you are going up or down a ramp with a cart full of groceries it’s difficult to do lol hope this helps and I love your pfp have you played chapter 2 yet?

4 0
3 years ago
How many moles of Mg are contained in 11.0<br> grams of magnesium?
DanielleElmas [232]

Answer:

Should be 0.6106 though i could be wrong

Explanation:

3 0
3 years ago
An aluminum can (Al) has a mass of 15.8 grams. How many atoms of aluminum are in the can?
Naddik [55]

Answer:

i think this is the answer you can try it tho...

Explanation:

Notice that the value 12.01 grams of natural carbon is the same as the atomic mass value (12.01 amu). It also tells us that 26.98 grams of aluminum contains exactly 6.022 x 1023 atoms of aluminum.

5 0
3 years ago
2. The power steering in an automobile has a mechanical advantage of roughly 75. If the input force on the steering wheel is 49
Marianna [84]

Answer: 3675N

Explanation:

A mechanical advantage measures the amplified force taken by the whole mechanical system.

It gives the ratio between the force applied to the load and the force needed to overcome the given force. It has no unit because the two ratio quantities are  force.

Mechanical advantage is  defined as the force exerted by the machine to the for force applied on it.

Mechanical Advantage =

MA= output force/input force

Wherein,

MA is the mechanical advantage, =75

Input force= 49N

Output force ?

MA=output force /input force

75=x/49

OUTPUT FORCE = 75X 49 = 3675N

4 0
3 years ago
On the calendar provided below, the full moon is shown happening on the eleventh of the month? What moon would you see around th
pochemuha

Answer:

The correct answer is - B. New Moon.

Explanation:

The change of moon disc from all black to all light to all dark again is called the lunar cycle. It takes almost 30 days (29.53059 to be precise). The time from all black to all light or all light to all black is almost 15 days. All black moon is termed as the new moon and all light is termed as the full moon.

As given that the full moon is shown happening on the eleventh of the month then what moon would be around 25 which is 14 days later that should be in waxing gibbous phase and almost new moon.

Thus, the correct answer is - B. new moon.

3 0
3 years ago
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