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Likurg_2 [28]
3 years ago
7

The amount of heat energy needed to heat 200 g of water from 15 °C to its boiling point, and boil it, is

Chemistry
1 answer:
Svetllana [295]3 years ago
4 0

can you explain it further

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A metal weighing 7.101 g is placed in a graduated cylinder containing 33.0 mL of water. The water level rose to the 37.4 mL mark
musickatia [10]
Volume of the metal = change in volume reading
Volume = 37.4 - 33
Volume = 4.4 ml

Density = mass / volume
Density = 7.101 / 4.4
Density = 1.61 g/ml
7 0
3 years ago
__________are when the Sun, Earth, and moon align in a straight line, the tides are higher than normal high
IceJOKER [234]
An eclipse i’m pretty sure right? Lunar maybe?
4 0
3 years ago
Name the following ionic compounds: (a) Na2SO4, (b)Cu(NO3)2 (c) Fe2(CO3)3
Sindrei [870]

Answer and Explanation:

(a) Na_2So_4 : its chemical name is sodium sulfate in which sodium is present as Na_2^+ and sulfate is present as So_4^{2-}

(b) Cu(NO_3)_2 : Its chemical name is copper nitrate which is a inorganic compound which is mostly crystalline in nature

(c)Fe_2(Co_3)_2 : Its chemical name is iron carbonate or ferric carbonate

5 0
3 years ago
Analysis of 20.0 g of a compound containing only calcium and bromine indicates that 4.00 g of calcium are present. What is the e
Leto [7]

Answer:

d. Ca_5Br_2

Explanation:

Mass of calcium = 4.00 g

Molar mass of calcium = 40.078 g/mol

<u>Moles of calcium = 4.00 / 40.078 moles = 0.9981 moles</u>

Given that the compound only contains calcium and bromine. So,

Mass of bromine in the sample = Total mass - Mass of calcium

Mass of the sample = 20.0 g

<u>Mass of bromine in sample = 20.0 - 4.00 g = 16.0 g</u>

Molar mass of bromine = 79.904 g/mol

<u>Moles of Bromine  = 16.0 / 79.904  = 0.2002 moles </u>

Taking the simplest ratio for Ca and Br as:

0.9981 : 0.2002  = 5 : 1

The empirical formula is = Ca_5Br_2

3 0
3 years ago
N2 + 3H2 —&gt; 2NH3
aliina [53]

Explanation:

47.0g is the mass of ammonia

8 0
3 years ago
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