4 years ago

Name an element or elements in the periodic table that you would expect to be chemically similar to potassium.

1 answer:

6 0

Potassium (K) is in Group I of the periodic table, and elements in the same column (period) are similar. Sodium (Na), or lithium (Li) are similar.

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What is the chemical equation for a reaction between copper (ll carbonate and heat?

tino4ka555 [31]

Copper (II) Carbonate + Heat yields copper (II) oxide and carbon dioxide
Molecular Equation: CuCo3 + heat > CuO + CO2

6 0

3 years ago

Please answer! Tap on the photo❤️

lina2011 [118]

Answer:

Explanation:

no of grams in picture c = A+B

= 200+10 =210

for D its also 210 ..... the water already contains the salt .....so the mass of salt has added to the mass of water which is still 210

that's all .... have fun

6 0

3 years ago

How many molecules are in the substance formula of 2C6H1206 (use coefficients)

FrozenT [24]

Answer: The number of formula units present in 2 moles of $C_6H_{12}O_6$ are $1.2044\times 10^{24}$

Explanation:

Formula units are defined as the number of molecules or atoms present in 1 mole of a compound or element respectively.

According to mole concept:

1 mole of a compound contains $6.022\times 10^{23}$ number of formula units

Here, 2 represents the number of moles of $C_6H_{12}O_6$

We are given:

Moles of $C_6H_{12}O_6$ (glucose) = 2 moles

Number of formula units of $C_6H_{12}O_6=(2\times 6.022\times 10^{23})=1.2044\times 10^{24}$

Hence, the number of formula units present in 2 moles of $C_6H_{12}O_6$ are $1.2044\times 10^{24}$

6 0

3 years ago

33) 1 e = ........С O 1.6*10^-27 O * 1.6 *10^-19 O 1.66 * 10^-19 o 1.66* 10^-27

Brilliant_brown [7]

Answer

0.16574

Explanation:

because why not

8 0

3 years ago

Conduction or convection

denpristay [2]

Answer:

1 radiation

2 conduction

3 radiation

8 0

3 years ago