All categories

3 years ago

11. If

Chemistry

1 answer:

puteri [66]3 years ago

7 0

Explanation:

if you follow me I will give your answer

You might be interested in

Choose the pair in which the components have the same charge. question 6 options: a proton and a hydrogen atom a hydrogen atom a

worty [1.4K]

Answer:

A Neutron and a Hydrogen Atom

Explanation:

Hydrogen atom having an atomic mass of 1.008 amu consists of one proton and one electron. Hence, the +ve and -ve charges cancels out and makes the hydrogen atom a neutral specie.

Also, we know that neutron is neutral sub particle while, proton and electron are positively and negatively charged respectively. Therefore, a neutral neutron having no charge becomes equal to hydrogen atom having zero charge due to cancellation of both +ve and -ve charges.

8 0

3 years ago

Which of the following is NOT an example of pseudoscience?

rewona [7]

Answer:

I think its vaccines

6 0

3 years ago

Read 2 more answers

"How many formula units are there in sample of copper(II) sulfate that has

babymother [125]

Answer: $1.23\times 10^{23}$ formula units

Explanation:

According to avogadro's law, 1 mole of every substance occupies 22.4 L at STP and contains avogadro's number $6.023\times 10^{23}$ of particles.

To calculate the moles, we use the equation:

$\text{Number of moles}=\frac{\text{Given mass}}{\text {Molar mass}}=\frac{32.5g}{160g/mol}=0.203moles$

1 mole of $CuSO_4$ contains $6.023\times 10^{23}$ of formula units

Thus 0.203 mole of $CuSO_4$ contains = $\frac{6.023\times 10^{23}}{1}\times 0.203=1.23\times 10^{23}$ of formula units

8 0

4 years ago

The radioisotope that has the longest half-life is the best to use in powering planet and space exploration vehicles because the

Diano4ka-milaya [45]

Answer:

U-238

Explanation:

For a given radioisotope, half life can be defined as the time taken for the isotope to decay into one-half of its original amount. Mathematically, this is expressed as:

$t_{1/2} = \frac{0.693}{k}$

where k = rate constant for the radioactive decay process

Greater the t1/2 longer will be its stability.

Based on the given data, U-238 has the largest half life and therefore will be best suited for applications mentioned.

4 0

4 years ago

Read 2 more answers

The article defines several kinds of electromagnetic waves present in our everyday lives. Identify three kinds that you have exp

Doss [256]

$\sf{MICROWAVE \: OVENS}$

In a microwave oven, microwaves emitted by a small antenna are directed into the cooking compartment, and as they enter, they pass a set of turning metal fan blades.

$\sf{radio waves}$

it used to convey information from one place to another through intervening media,like- Radios and televisions

$\sf{X Rays}$

used in hospitals to produce photograph of bone to check for break or fracture.They can penetrate less dense matter such body tissue and skin.

6 0

3 years ago