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grandymaker [24]
3 years ago
5

Which element easily loses one electron to form a positive ion? A. Magnesium (Mg) B. Lithium (Li) C. Nitrogen (N) D. Fluorine (F

)
Chemistry
1 answer:
gladu [14]3 years ago
3 0

Answer: Lithium (Li)

Explanation:

Once it loses its only valence electron, there’s no longer a negative charge.

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Question 18 (5 points)
NeX [460]

Answer:

d. oxygen is a pure substance and rocks are mixtures

7 0
3 years ago
Is this balanced ?2 Fe(NO3)3 + 3 MgSO4 → 3 Mg(NO3)2 + 2 Fez(SO4)3
Alex

it shoudl be : 2Fe(NO3)3 + 3MgSO4 → 3Mg(NO3)2 + Fe2(SO4)3

(the difference is Fe2(SO4)3 has no coefficient)

8 0
3 years ago
Which particle is a neutron most equal to in mass? A. a molecule B. an atom C. a proton D. an electron
olchik [2.2K]

Answer:

c . a proton

Protons and neutrons have approximately the same mass, about 1.67 × 10−24 grams

5 0
3 years ago
An object has a weight of 5.10 Newtons (N) at sea level, where the acceleration due to gravity is 9.81 m/s2.
RUDIKE [14]
Well, you could get the mass as m=\frac{G_0}{g_0} ad then g_1=\frac{G_1}{m}, where G_0 is the sea level weight, g_0 the sea level accel., g_1 the accel. above while G_1 the weight above.
8 0
3 years ago
Read 2 more answers
What is the percent of nitrogen in dinitrogen pentoxide?
Lostsunrise [7]

Answer: D.) 25.9%

Explanation:

Dinitrogen pentoxide chemical formular : N2O5

Calculating the molar mass of N2O5

Atomic mass of nitrogen(N) = 14

Atomic mass of oxygen(O) = 16

Therefore molar mass :

N2O5 = (2 × 14) + (5 × 16) = 28 + 80 = 108g/mol

Percentage amount of elements in N205:

NITROGEN (N) :

(Mass of nitrogen / molar mass of N2O5) × 100%

MASS OF NITROGEN = (N2) = 2 × 14 = 28

PERCENT OF NITROGEN : (28/108) × 100%

0.259259 × 100%

= 25.925%

= 25.9%

4 0
3 years ago
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