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77julia77 [94]
3 years ago
6

Hdhdhzjzjzj which??????????????????

Chemistry
1 answer:
dsp733 years ago
8 0

Answer:

I think it’s D but not sure

Explanation:

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The model represents how electromagnetic radiation transmits energy.
KiRa [710]

Answer: d

Explanation: just did this

5 0
3 years ago
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Tokyo, Japan is 8817.6 km from California. how many millimeters is this? answer in scientific notation.​
vitfil [10]

Answer:

d=8.817\times 10^9\ mm

Explanation:

It is given that,

Japan is 8817.6 km from California. We need to convert this distance in millimeters.

We know the conversion from km to mm is as follows :

1 km = 1000000

To convert mm km to mm use the unitary method as follows :

8817.6 km = 8817.6 × 1000000

d=8.817\times 10^9\ mm

Hence, the distance between Japan and California 8.817\times 10^9\ mm.

7 0
3 years ago
Copper metal (Cu) reacts with silver nitrate (AgNO3) in aqueous solution to form Ag and Cu(NO3)2. An excess of AgNO3 is present.
aev [14]


we are given the reaction Cu + 2AgNO3 ---> Cu(NO3)2 + 2Ag. This means for every mole Cu used, there are 2 moles of Ag produced. In this case, given 31.75 g Cu, converting to moles through molar mass and using stoichiometric ratio and the molar mass of Ag, the mass Ag produced is 107.9 grams. 
8 0
3 years ago
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Potassium hydrogen phthalate is a solid, monoprotic acid frequently used in the laboratory to standardize strong base solutions.
Norma-Jean [14]

2 KHP(aq) + Ba(OH)_{2}(aq) ---> KP_{2}Ba (aq) + 2 H_{2}O (l)\

Moles of Ba(OH)_{2}=0.483 \frac{mol}{L} * 28.5 mL *\frac{1 L}{1000mL}  = 0.0138 mol Ba(OH)_{2}

Mass of KHP = 0.0138 mol Ba(OH)_{2} * \frac{2 mol KHP}{1 mol Ba(OH)_{2}}  * \frac{204.22 g KHP}{1mol KHP}

= 5.64 g KHP

6 0
3 years ago
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If you burn a piece of wood, it becomes a different substance. What type of
lbvjy [14]

Answer:

B. Chemical property

Explanation:

8 0
3 years ago
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