Ask question

Ask question

All categories

Morgarella [4.7K]

3 years ago

13

properties of elements within a ________ on the periodic table change in a predictable way from one side of the table to the oth

er

1 answer:

SpyIntel [72]3 years ago

4 0

Properties change within a Row (or period) as the number of valence electrons in the outer shell increase

You might be interested in

How many moles of oxygen would be needed to produce 84 moles of sulfur trioxide according to the following balanced chemical equ

olganol [36]

Answer:

126 moles

Explanation:

2S +3 o2=2so3

So if 2 moles of so3 required 3 moles of oxygen

. So 84 moles of so3 will require 84*3/2=126 moles of oxygen

4 0

3 years ago

A chemical reaction takes place inside a flask submerged in a water bath. The water bath contains 8.10kg of water at 33.9 degree

lions [1.4K]

Answer:

The new temperature of the water bath 32.0°C.

Explanation:

Mass of water in water bath ,m= 8.10 kg = 8100 g ( 1kg = 1000g)

Initial temperature of the water = $T_1=33.9^oC=33.9+273K=306.9 K$

Final temperature of the water = $T_2$

Specific heat capacity of water under these conditions = c = 4.18 J/gK

Amount of energy lost by water = -Q = -69.0 kJ = -69.0 × 1000 J

( 1kJ=1000 J)

$Q=m\times c\times \Delta T=m\times c\times (T_2-T_1)$

$-69.0\times 1000 J=8100 g\times 4.18 J/g K\times (T_2-306.9 K)$

$-69,000.0 J=8100 g\times 4.18 J/g K\times (T_2-306.9 K)$

$T_2=304.86 K=304.86 -273^oC=31.86^oC\approx 32.0^oC$

The new temperature of the water bath 32.0°C.

5 0

3 years ago

Which chemical reaction is a single replacement reaction? A. Ba(ClO3)2 —> BaCl2 + 3O2 B. 2Mg + O2 —> 2MgO C. Zn + CuCl2 —&

professor190 [17]

I believe the correct answer is C. <span>Zn + CuCl2 —> ZnCl2 + Cu</span>

8 0

3 years ago

How many moles of water react with 0.946 mol of nitrogen dioxide

VARVARA [1.3K]

<span>the answer is
2.7 moles

</span>

5 0

3 years ago

Two or more assistance

Goryan [66]

I believe it would be a compound.

4 0

3 years ago